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aus+uk / uk.comp.os.linux / Re: Wired socket puzzle

SubjectAuthor
* Wired socket puzzleDavey
+* Re: Wired socket puzzleChris Green
|`* Re: Wired socket puzzleDavey
| +- Re: Wired socket puzzleAndy Burns
| `* Re: Wired socket puzzleChris Green
|  `* Re: Wired socket puzzleDavey
|   `* Re: Wired socket puzzleDavey
|    +- Re: Wired socket puzzleTony Mountifield
|    +* Re: Wired socket puzzleAndy Burns
|    |`- Re: Wired socket puzzleDavey
|    `* Re: Wired socket puzzleJava Jive
|     +- Re: Wired socket puzzleDavey
|     `- Wired socket puzzle SOLVEDDavey
+* Re: Wired socket puzzleMarco Moock
|`* Re: Wired socket puzzleDavey
| `* Re: Wired socket puzzleMarco Moock
|  `- Re: Wired socket puzzleDavey
`* Re: Wired socket puzzleAndy Burns
 `- Re: Wired socket puzzleDavey

1
Wired socket puzzle

<st5ut0$dn2$1@dont-email.me>

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From: dav...@example.invalid (Davey)
Newsgroups: uk.comp.os.linux
Subject: Wired socket puzzle
Date: Sun, 30 Jan 2022 12:04:48 +0000
Organization: A noiseless patient Spider
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 by: Davey - Sun, 30 Jan 2022 12:04 UTC

I have a PCSpecialist laptop, which I find great. Except that the
socket for the wired router cable is 'upside-down', and I once tried to
insert the plug in what I had forgotten was the incorrect orientation.
Since then, the wired connection doesn't seem to want to work, all
indications are that it is working and communicating with the router,
but it won't load any webpages. Pings work fine. The manufacturer, who
does not support Linux, naturally wants me to return the laptop so it
can fix the socket. Fair enough. I am using the Wifi instead until I can
find the opportunity to do without the machine for a week or so.
But are there any tests that I can do to try and find out what the
problem is? I wonder if one of the pins in the socket has got bent out
of shape or contact, and how does it appear as though there is
communication, but it doesn't actually work?

Any help welcome, out of curiosity.
--
Davey.

Re: Wired socket puzzle

<13dici-pj0d1.ln1@esprimo.zbmc.eu>

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From: cl...@isbd.net (Chris Green)
Newsgroups: uk.comp.os.linux
Subject: Re: Wired socket puzzle
Date: Sun, 30 Jan 2022 12:32:01 +0000
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 by: Chris Green - Sun, 30 Jan 2022 12:32 UTC

Davey <davey@example.invalid> wrote:
> I have a PCSpecialist laptop, which I find great. Except that the
> socket for the wired router cable is 'upside-down', and I once tried to
> insert the plug in what I had forgotten was the incorrect orientation.
> Since then, the wired connection doesn't seem to want to work, all
> indications are that it is working and communicating with the router,
> but it won't load any webpages. Pings work fine. The manufacturer, who
> does not support Linux, naturally wants me to return the laptop so it
> can fix the socket. Fair enough. I am using the Wifi instead until I can
> find the opportunity to do without the machine for a week or so.
> But are there any tests that I can do to try and find out what the
> problem is? I wonder if one of the pins in the socket has got bent out
> of shape or contact, and how does it appear as though there is
> communication, but it doesn't actually work?
>
If pings work fine then I can't see how there can be anything wrong
with the hardware. It sounds more like a DNS problem to me, i.e. the
WiFi connection has proper DNS whereas the wired connection, for
whatever reason, has no DNS.

Simple thing to try, get the IP address of some web site ('host <name
of website>' at the command line), then turn off WiFi and try
connecting to that numeric IP address in the browser address bar.

By the way you have turned off the WiFi when you try the wired
connection have you? It often confuses things if you have both at the
same time. To do a thorough check turn off the WiFi, then reboot the
laptop, then try the wired connection.

--
Chris Green
·

Re: Wired socket puzzle

<20220130134105.21fa681d@ryz>

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From: mo0...@posteo.de (Marco Moock)
Newsgroups: uk.comp.os.linux
Subject: Re: Wired socket puzzle
Date: Sun, 30 Jan 2022 13:41:05 +0100
Organization: A noiseless patient Spider
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 by: Marco Moock - Sun, 30 Jan 2022 12:41 UTC

Am Sonntag, 30. Januar 2022, um 12:04:48 Uhr schrieb Davey:

> I have a PCSpecialist laptop, which I find great. Except that the
> socket for the wired router cable is 'upside-down', and I once tried
> to insert the plug in what I had forgotten was the incorrect
> orientation. Since then, the wired connection doesn't seem to want to
> work, all indications are that it is working and communicating with
> the router, but it won't load any webpages. Pings work fine. The
> manufacturer, who does not support Linux, naturally wants me to
> return the laptop so it can fix the socket. Fair enough. I am using
> the Wifi instead until I can find the opportunity to do without the
> machine for a week or so. But are there any tests that I can do to
> try and find out what the problem is? I wonder if one of the pins in
> the socket has got bent out of shape or contact, and how does it
> appear as though there is communication, but it doesn't actually work?
>
> Any help welcome, out of curiosity.

Show the output of
ip a
ip route show
ip -6 route show
cat /etc/resolv.conf
systemd-resolve --status --no-pager

Re: Wired socket puzzle

<j5njn4Fud41U2@mid.individual.net>

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From: use...@andyburns.uk (Andy Burns)
Newsgroups: uk.comp.os.linux
Subject: Re: Wired socket puzzle
Date: Sun, 30 Jan 2022 13:55:47 +0000
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In-Reply-To: <st5ut0$dn2$1@dont-email.me>
 by: Andy Burns - Sun, 30 Jan 2022 13:55 UTC

Davey wrote:

> it won't load any webpages. Pings work fine.

Then it's not physical problem caused by inserting the plug badly.

Static or dynamic IP address?
default gateway not pointing to router?
firewall rules?

Re: Wired socket puzzle

<st6h9t$2fc$1@dont-email.me>

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From: dav...@example.invalid (Davey)
Newsgroups: uk.comp.os.linux
Subject: Re: Wired socket puzzle
Date: Sun, 30 Jan 2022 17:18:53 +0000
Organization: A noiseless patient Spider
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 by: Davey - Sun, 30 Jan 2022 17:18 UTC

On Sun, 30 Jan 2022 13:55:47 +0000
Andy Burns <usenet@andyburns.uk> wrote:

> Davey wrote:
>
> > it won't load any webpages. Pings work fine.
>
> Then it's not physical problem caused by inserting the plug badly.
>
> Static or dynamic IP address?
> default gateway not pointing to router?
> firewall rules?

Thanks, folks, I'll do the tests prescribed and report back.
That sounds encouraging.

--
Davey.

Re: Wired socket puzzle

<st6jb0$iul$1@dont-email.me>

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From: dav...@example.invalid (Davey)
Newsgroups: uk.comp.os.linux
Subject: Re: Wired socket puzzle
Date: Sun, 30 Jan 2022 17:53:36 +0000
Organization: A noiseless patient Spider
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 by: Davey - Sun, 30 Jan 2022 17:53 UTC

On Sun, 30 Jan 2022 12:32:01 +0000
Chris Green <cl@isbd.net> wrote:

> Davey <davey@example.invalid> wrote:
> > I have a PCSpecialist laptop, which I find great. Except that the
> > socket for the wired router cable is 'upside-down', and I once
> > tried to insert the plug in what I had forgotten was the incorrect
> > orientation. Since then, the wired connection doesn't seem to want
> > to work, all indications are that it is working and communicating
> > with the router, but it won't load any webpages. Pings work fine.
> > The manufacturer, who does not support Linux, naturally wants me to
> > return the laptop so it can fix the socket. Fair enough. I am using
> > the Wifi instead until I can find the opportunity to do without the
> > machine for a week or so. But are there any tests that I can do to
> > try and find out what the problem is? I wonder if one of the pins
> > in the socket has got bent out of shape or contact, and how does it
> > appear as though there is communication, but it doesn't actually
> > work?
> If pings work fine then I can't see how there can be anything wrong
> with the hardware. It sounds more like a DNS problem to me, i.e. the
> WiFi connection has proper DNS whereas the wired connection, for
> whatever reason, has no DNS.
>
> Simple thing to try, get the IP address of some web site ('host <name
> of website>' at the command line), then turn off WiFi and try
> connecting to that numeric IP address in the browser address bar.
>
> By the way you have turned off the WiFi when you try the wired
> connection have you? It often confuses things if you have both at the
> same time. To do a thorough check turn off the WiFi, then reboot the
> laptop, then try the wired connection.
>

Well, that was a surprise. Ping now does not work, so either it didn't
before (last month) and I mis-interpreted something, or it has degraded.
Whichever, the Connection Info. box still says 'Connected', but that is
as far as it goes.
All other settings look correct, to me, and I tried connecting both
Automatically and Manually.
So a trip back to base is after all in order.
Thanks, All, for the info, though.
--
Davey.

Re: Wired socket puzzle

<j5o3mcF2unpU2@mid.individual.net>

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From: use...@andyburns.uk (Andy Burns)
Newsgroups: uk.comp.os.linux
Subject: Re: Wired socket puzzle
Date: Sun, 30 Jan 2022 18:28:28 +0000
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 by: Andy Burns - Sun, 30 Jan 2022 18:28 UTC

Davey wrote:

> So a trip back to base is after all in order.

Might as well give the replies to Marco's questions, could save it a wasted journey?

Re: Wired socket puzzle

<tj1jci-t79e1.ln1@esprimo.zbmc.eu>

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From: cl...@isbd.net (Chris Green)
Newsgroups: uk.comp.os.linux
Subject: Re: Wired socket puzzle
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 by: Chris Green - Sun, 30 Jan 2022 18:22 UTC

Davey <davey@example.invalid> wrote:
> >
> > By the way you have turned off the WiFi when you try the wired
> > connection have you? It often confuses things if you have both at the
> > same time. To do a thorough check turn off the WiFi, then reboot the
> > laptop, then try the wired connection.
> >
>
> Well, that was a surprise. Ping now does not work, so either it didn't
> before (last month) and I mis-interpreted something, or it has degraded.
> Whichever, the Connection Info. box still says 'Connected', but that is
> as far as it goes.
> All other settings look correct, to me, and I tried connecting both
> Automatically and Manually.
> So a trip back to base is after all in order.
> Thanks, All, for the info, though.

I'm still a bit confused as to what's going on.

Where are you trying to connect "Automatically and Manually"? ... and
my Connection Info. box doesn't say 'connected' or not, it has lots of
information about the connectio like the IP address, MAC address, speed
and so on.

--
Chris Green
·

Re: Wired socket puzzle

<st7gga$f5$1@dont-email.me>

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From: dav...@example.invalid (Davey)
Newsgroups: uk.comp.os.linux
Subject: Re: Wired socket puzzle
Date: Mon, 31 Jan 2022 02:11:22 +0000
Organization: A noiseless patient Spider
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 by: Davey - Mon, 31 Jan 2022 02:11 UTC

On Sun, 30 Jan 2022 18:22:21 +0000
Chris Green <cl@isbd.net> wrote:

> Davey <davey@example.invalid> wrote:
> > >
> > > By the way you have turned off the WiFi when you try the wired
> > > connection have you? It often confuses things if you have both
> > > at the same time. To do a thorough check turn off the WiFi, then
> > > reboot the laptop, then try the wired connection.
> > >
> >
> > Well, that was a surprise. Ping now does not work, so either it
> > didn't before (last month) and I mis-interpreted something, or it
> > has degraded. Whichever, the Connection Info. box still says
> > 'Connected', but that is as far as it goes.
> > All other settings look correct, to me, and I tried connecting both
> > Automatically and Manually.
> > So a trip back to base is after all in order.
> > Thanks, All, for the info, though.
>
> I'm still a bit confused as to what's going on.
>
> Where are you trying to connect "Automatically and Manually"? ... and
> my Connection Info. box doesn't say 'connected' or not, it has lots of
> information about the connectio like the IP address, MAC address,
> speed and so on.
>

Briefly, if I click on the Connection Info. box, it says 'Connected'.
This is Ubuntu 18.04.
The Auto and Manual refers to the DHCP or not connection.
More tomorrow, it's bed-time.
--
Davey.

Re: Wired socket puzzle

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From: dav...@example.invalid (Davey)
Newsgroups: uk.comp.os.linux
Subject: Re: Wired socket puzzle
Date: Mon, 31 Jan 2022 10:25:37 +0000
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 by: Davey - Mon, 31 Jan 2022 10:25 UTC

On Mon, 31 Jan 2022 02:11:22 +0000
Davey <davey@example.invalid> wrote:

> On Sun, 30 Jan 2022 18:22:21 +0000
> Chris Green <cl@isbd.net> wrote:
>
> > Davey <davey@example.invalid> wrote:
> > > >
> > > > By the way you have turned off the WiFi when you try the wired
> > > > connection have you? It often confuses things if you have both
> > > > at the same time. To do a thorough check turn off the WiFi,
> > > > then reboot the laptop, then try the wired connection.
> > > >
> > >
> > > Well, that was a surprise. Ping now does not work, so either it
> > > didn't before (last month) and I mis-interpreted something, or it
> > > has degraded. Whichever, the Connection Info. box still says
> > > 'Connected', but that is as far as it goes.
> > > All other settings look correct, to me, and I tried connecting
> > > both Automatically and Manually.
> > > So a trip back to base is after all in order.
> > > Thanks, All, for the info, though.
> >
> > I'm still a bit confused as to what's going on.
> >
> > Where are you trying to connect "Automatically and Manually"? ...
> > and my Connection Info. box doesn't say 'connected' or not, it has
> > lots of information about the connectio like the IP address, MAC
> > address, speed and so on.
> >
>
> Briefly, if I click on the Connection Info. box, it says 'Connected'.
> This is Ubuntu 18.04.
> The Auto and Manual refers to the DHCP or not connection.
> More tomorrow, it's bed-time.

To confirm, I shut down the Wifi, inserted the network cable, and
rebooted the PC.
The setup was set to DHCP, with Auto DNS and Routes. The Connections box
again showed the Wired connection to be Connected, at 1000 Mb/s.
But all attempts to actually connect to another PC failed, ping
requests going on for ages with no response. However, removing the
cable from the PC's socket did result in the Connection indicator
disappearing, so there is some communication there, but certainly not
enough for it to work.
--
Davey.

Re: Wired socket puzzle

<st8emc$ml0$1@softins.softins.co.uk>

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From: ton...@mountifield.org (Tony Mountifield)
Newsgroups: uk.comp.os.linux
Subject: Re: Wired socket puzzle
Date: Mon, 31 Jan 2022 10:46:36 +0000 (UTC)
Organization: Software Insight Ltd., Winchester, UK
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 by: Tony Mountifield - Mon, 31 Jan 2022 10:46 UTC

In article <st8df2$9e0$1@dont-email.me>, Davey <davey@example.invalid> wrote:
> To confirm, I shut down the Wifi, inserted the network cable, and
> rebooted the PC.
> The setup was set to DHCP, with Auto DNS and Routes. The Connections box
> again showed the Wired connection to be Connected, at 1000 Mb/s.
> But all attempts to actually connect to another PC failed, ping
> requests going on for ages with no response. However, removing the
> cable from the PC's socket did result in the Connection indicator
> disappearing, so there is some communication there, but certainly not
> enough for it to work.

This suggests that the problem is probably not with the PC's network interface,
but it may take a bit of methodical diagnosis.

Can you go into a shell and post the output of the following two commands?

ifconfig -a
netstat -rn

You could also use tcpdump to see if the PC is hearing anything on the network:

sudo tcpdump -n -i any -c 10

(The -c 10 makes it stop after 10 packets - use control-C if you don't see any)

Obviously, all the above should be done while wifi is still switched off.
You may need to capture the outputs in files if you need to re-enable wifi
before you can post the results.

Cheers
Tony

--
Tony Mountifield
Work: tony@softins.co.uk - http://www.softins.co.uk
Play: tony@mountifield.org - http://tony.mountifield.org

Re: Wired socket puzzle

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From: use...@andyburns.uk (Andy Burns)
Newsgroups: uk.comp.os.linux
Subject: Re: Wired socket puzzle
Date: Mon, 31 Jan 2022 11:35:12 +0000
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In-Reply-To: <st8df2$9e0$1@dont-email.me>
 by: Andy Burns - Mon, 31 Jan 2022 11:35 UTC

Davey wrote:

> there is some communication there, but certainly not
> enough for it to work.

The output of the commands requested will be more useful for people to see
what's actually happening than your description ... just saying ...

Re: Wired socket puzzle

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Newsgroups: uk.comp.os.linux
Subject: Re: Wired socket puzzle
Date: Mon, 31 Jan 2022 12:01:26 +0000
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 by: Davey - Mon, 31 Jan 2022 12:01 UTC

On Sun, 30 Jan 2022 13:41:05 +0100
Marco Moock <mo01@posteo.de> wrote:

> Show the output of
> ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
group default qlen 1000 link/loopback 00:00:00:00:00:00 brd
00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: enp1s0f1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel
state UP group default qlen 1000 link/ether 80:fa:5b:94:d5:65 brd
ff:ff:ff:ff:ff:ff inet 192.168.179.2/24 brd 192.168.179.255 scope
global dynamic noprefixroute enp1s0f1 valid_lft 21578sec preferred_lft
21578sec inet6 fe80::26a4:47a1:73f3:1275/64 scope link noprefixroute
valid_lft forever preferred_lft forever
3: wlp6s0: <BROADCAST,MULTICAST> mtu 1500 qdisc noqueue state DOWN
group default qlen 1000 link/ether 38:fc:98:5b:6c:7e brd
ff:ff:ff:ff:ff:ff

> ip route show
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
group default qlen 1000 link/loopback 00:00:00:00:00:00 brd
00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: enp1s0f1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel
state UP group default qlen 1000 link/ether 80:fa:5b:94:d5:65 brd
ff:ff:ff:ff:ff:ff inet 192.168.179.2/24 brd 192.168.179.255 scope
global dynamic noprefixroute enp1s0f1 valid_lft 21578sec preferred_lft
21578sec inet6 fe80::26a4:47a1:73f3:1275/64 scope link noprefixroute
valid_lft forever preferred_lft forever
3: wlp6s0: <BROADCAST,MULTICAST> mtu 1500 qdisc noqueue state DOWN
group default qlen 1000 link/ether 38:fc:98:5b:6c:7e brd
ff:ff:ff:ff:ff:ff

> ip -6 route show
::1 dev lo proto kernel metric 256 pref medium
fe80::/64 dev enp1s0f1 proto kernel metric 100 pref medium
fe80::/64 dev enp1s0f1 proto kernel metric 256 pref medium

> cat /etc/resolv.conf
# This file is managed by man:systemd-resolved(8). Do not edit.
# # This is a dynamic resolv.conf file for connecting local clients to the
# internal DNS stub resolver of systemd-resolved. This file lists all
# configured search domains.
# # Run "systemd-resolve --status" to see details about the uplink DNS
servers # currently in use.
# # Third party programs must not access this file directly, but only
through the # symlink at /etc/resolv.conf. To manage man:resolv.conf(5)
in a different way, # replace this symlink by a static file or a
different symlink. #
# See man:systemd-resolved.service(8) for details about the supported
modes of # operation for /etc/resolv.conf.

nameserver 127.0.0.53
options edns0

> systemd-resolve --status --no-pager
Global
DNSSEC NTA: 10.in-addr.arpa
16.172.in-addr.arpa
168.192.in-addr.arpa
17.172.in-addr.arpa
18.172.in-addr.arpa
19.172.in-addr.arpa
20.172.in-addr.arpa
21.172.in-addr.arpa
22.172.in-addr.arpa
23.172.in-addr.arpa
24.172.in-addr.arpa
25.172.in-addr.arpa
26.172.in-addr.arpa
27.172.in-addr.arpa
28.172.in-addr.arpa
29.172.in-addr.arpa
30.172.in-addr.arpa
31.172.in-addr.arpa
corp
d.f.ip6.arpa
home
internal
intranet
lan
local
private
test

Link 3 (wlp6s0)
Current Scopes: none
LLMNR setting: yes
MulticastDNS setting: no
DNSSEC setting: no
DNSSEC supported: no

Link 2 (enp1s0f1)
Current Scopes: DNS
LLMNR setting: yes
MulticastDNS setting: no
DNSSEC setting: no
DNSSEC supported: no
DNS Servers: 192.168.179.1
DNS Domain: ~.

>

--
Davey.

Re: Wired socket puzzle

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Newsgroups: uk.comp.os.linux
Subject: Re: Wired socket puzzle
Date: Mon, 31 Jan 2022 12:04:57 +0000
Organization: A noiseless patient Spider
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 by: Davey - Mon, 31 Jan 2022 12:04 UTC

On Mon, 31 Jan 2022 11:35:12 +0000
Andy Burns <usenet@andyburns.uk> wrote:

> Davey wrote:
>
> > there is some communication there, but certainly not
> > enough for it to work.
>
> The output of the commands requested will be more useful for people
> to see what's actually happening than your description ... just
> saying ...

Answered inline to Marco's post. I hope you can make more sense of it
than I can!
To confirm, pings and ssh requests to a local PC on the same network
just hang forever with no result.
--
Davey.

Re: Wired socket puzzle

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From: jav...@evij.com.invalid (Java Jive)
Newsgroups: uk.comp.os.linux
Subject: Re: Wired socket puzzle
Date: Mon, 31 Jan 2022 12:36:08 +0000
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 by: Java Jive - Mon, 31 Jan 2022 12:36 UTC

On 31/01/2022 10:25, Davey wrote:
>
> To confirm, I shut down the Wifi, inserted the network cable, and
> rebooted the PC.
> The setup was set to DHCP, with Auto DNS and Routes. The Connections box
> again showed the Wired connection to be Connected, at 1000 Mb/s.
> But all attempts to actually connect to another PC failed, ping
> requests going on for ages with no response. However, removing the
> cable from the PC's socket did result in the Connection indicator
> disappearing, so there is some communication there, but certainly not
> enough for it to work.

First thing to try is the simplest one, a different cable.

--

Fake news kills!

I may be contacted via the contact address given on my website:
www.macfh.co.uk

Re: Wired socket puzzle

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Newsgroups: uk.comp.os.linux
Subject: Re: Wired socket puzzle
Date: Mon, 31 Jan 2022 14:03:55 +0000
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 by: Davey - Mon, 31 Jan 2022 14:03 UTC

On Mon, 31 Jan 2022 12:36:08 +0000
Java Jive <java@evij.com.invalid> wrote:

> On 31/01/2022 10:25, Davey wrote:
> >
> > To confirm, I shut down the Wifi, inserted the network cable, and
> > rebooted the PC.
> > The setup was set to DHCP, with Auto DNS and Routes. The
> > Connections box again showed the Wired connection to be Connected,
> > at 1000 Mb/s. But all attempts to actually connect to another PC
> > failed, ping requests going on for ages with no response. However,
> > removing the cable from the PC's socket did result in the
> > Connection indicator disappearing, so there is some communication
> > there, but certainly not enough for it to work.
>
> First thing to try is the simplest one, a different cable.
>

Well, that led to an interesting discovery.
I knew that I had tried that before, but it was worth doing it
again, to be sure.
I had a spare cable handy, already plugged into the router, so I
switched them at the PC. And it worked! To confirm that the cable
itself was faulty, I then switched the cables at the router, and the
failure stayed with the router socket, not the cable. I was not
expecting that. A couple of back-and-forth changes confirms this.
So the problem is the socket at the router, rather than the PC or the
cable. My attention now shifts to the router. Maybe the socket is set
up differently from the others. I don't remember it having any problem
when I last used it in that socket, for a different laptop, so maybe the
router setup for that socket has changed.
Thanks for the suggestion, even though it was not the problem, it led
to a new course of action.
Maybe the results of the tests I posted earlier might hint at the
problem in the router? I will dig into it's setup and see if I can find
anything.
If this posting is successful, then it was transmitted via the Wired
router connection, at last.
--
Davey.

Wired socket puzzle SOLVED

<st8qpb$mjl$2@dont-email.me>

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Newsgroups: uk.comp.os.linux
Subject: Wired socket puzzle SOLVED
Date: Mon, 31 Jan 2022 14:12:59 +0000
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 by: Davey - Mon, 31 Jan 2022 14:12 UTC

On Mon, 31 Jan 2022 12:36:08 +0000
Java Jive <java@evij.com.invalid> wrote:

> On 31/01/2022 10:25, Davey wrote:
> >
> > To confirm, I shut down the Wifi, inserted the network cable, and
> > rebooted the PC.
> > The setup was set to DHCP, with Auto DNS and Routes. The
> > Connections box again showed the Wired connection to be Connected,
> > at 1000 Mb/s. But all attempts to actually connect to another PC
> > failed, ping requests going on for ages with no response. However,
> > removing the cable from the PC's socket did result in the
> > Connection indicator disappearing, so there is some communication
> > there, but certainly not enough for it to work.
>
> First thing to try is the simplest one, a different cable.
>

Found it! The LAN socket on the router had guest access enabled,
although I have never had any guests using it. Problem solved. I am now
online using the wired connection of my laptop.

Thanks to everyone for working with me, it has led to the answer.

--
Davey.

Re: Wired socket puzzle

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Newsgroups: uk.comp.os.linux
Subject: Re: Wired socket puzzle
Date: Mon, 31 Jan 2022 20:36:51 +0100
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 by: Marco Moock - Mon, 31 Jan 2022 19:36 UTC

Am Montag, 31. Januar 2022, um 12:01:26 Uhr schrieb Davey:

> On Sun, 30 Jan 2022 13:41:05 +0100
> Marco Moock <mo01@posteo.de> wrote:
>
> > Show the output of
> > ip a
> 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
> group default qlen 1000 link/loopback 00:00:00:00:00:00 brd
> 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo
> valid_lft forever preferred_lft forever
> inet6 ::1/128 scope host
> valid_lft forever preferred_lft forever
> 2: enp1s0f1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel
> state UP group default qlen 1000 link/ether 80:fa:5b:94:d5:65 brd
> ff:ff:ff:ff:ff:ff inet 192.168.179.2/24 brd 192.168.179.255 scope
> global dynamic noprefixroute enp1s0f1 valid_lft 21578sec preferred_lft
> 21578sec inet6 fe80::26a4:47a1:73f3:1275/64 scope link noprefixroute
> valid_lft forever preferred_lft forever
> 3: wlp6s0: <BROADCAST,MULTICAST> mtu 1500 qdisc noqueue state DOWN
> group default qlen 1000 link/ether 38:fc:98:5b:6c:7e brd
> ff:ff:ff:ff:ff:ff
>
> > ip route show
> 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
> group default qlen 1000 link/loopback 00:00:00:00:00:00 brd
> 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo
> valid_lft forever preferred_lft forever
> inet6 ::1/128 scope host
> valid_lft forever preferred_lft forever
> 2: enp1s0f1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel
> state UP group default qlen 1000 link/ether 80:fa:5b:94:d5:65 brd
> ff:ff:ff:ff:ff:ff inet 192.168.179.2/24 brd 192.168.179.255 scope
> global dynamic noprefixroute enp1s0f1 valid_lft 21578sec preferred_lft
> 21578sec inet6 fe80::26a4:47a1:73f3:1275/64 scope link noprefixroute
> valid_lft forever preferred_lft forever
> 3: wlp6s0: <BROADCAST,MULTICAST> mtu 1500 qdisc noqueue state DOWN
> group default qlen 1000 link/ether 38:fc:98:5b:6c:7e brd
> ff:ff:ff:ff:ff:ff
>
> > ip -6 route show
> ::1 dev lo proto kernel metric 256 pref medium
> fe80::/64 dev enp1s0f1 proto kernel metric 100 pref medium
> fe80::/64 dev enp1s0f1 proto kernel metric 256 pref medium
>
> > cat /etc/resolv.conf
> # This file is managed by man:systemd-resolved(8). Do not edit.
> #
> # This is a dynamic resolv.conf file for connecting local clients to
> the # internal DNS stub resolver of systemd-resolved. This file lists
> all # configured search domains.
> #
> # Run "systemd-resolve --status" to see details about the uplink DNS
> servers # currently in use.
> #
> # Third party programs must not access this file directly, but only
> through the # symlink at /etc/resolv.conf. To manage
> man:resolv.conf(5) in a different way, # replace this symlink by a
> static file or a different symlink. #
> # See man:systemd-resolved.service(8) for details about the supported
> modes of # operation for /etc/resolv.conf.
>
> nameserver 127.0.0.53
> options edns0
>
> > systemd-resolve --status --no-pager
> Global
> DNSSEC NTA: 10.in-addr.arpa
> 16.172.in-addr.arpa
> 168.192.in-addr.arpa
> 17.172.in-addr.arpa
> 18.172.in-addr.arpa
> 19.172.in-addr.arpa
> 20.172.in-addr.arpa
> 21.172.in-addr.arpa
> 22.172.in-addr.arpa
> 23.172.in-addr.arpa
> 24.172.in-addr.arpa
> 25.172.in-addr.arpa
> 26.172.in-addr.arpa
> 27.172.in-addr.arpa
> 28.172.in-addr.arpa
> 29.172.in-addr.arpa
> 30.172.in-addr.arpa
> 31.172.in-addr.arpa
> corp
> d.f.ip6.arpa
> home
> internal
> intranet
> lan
> local
> private
> test
>
> Link 3 (wlp6s0)
> Current Scopes: none
> LLMNR setting: yes
> MulticastDNS setting: no
> DNSSEC setting: no
> DNSSEC supported: no
>
> Link 2 (enp1s0f1)
> Current Scopes: DNS
> LLMNR setting: yes
> MulticastDNS setting: no
> DNSSEC setting: no
> DNSSEC supported: no
> DNS Servers: 192.168.179.1
> DNS Domain: ~.
>
> >
>

You should be able to reach servers via IPv4, but not via IPv6.
Also check your DNS:

dig google.com

Then test a ping google.com

Re: Wired socket puzzle

<st9tbd$7fb$1@dont-email.me>

 copy mid

https://www.novabbs.com/aus+uk/article-flat.php?id=623&group=uk.comp.os.linux#623

 copy link   Newsgroups: uk.comp.os.linux
Path: i2pn2.org!i2pn.org!eternal-september.org!reader02.eternal-september.org!.POSTED!not-for-mail
From: dav...@example.invalid (Davey)
Newsgroups: uk.comp.os.linux
Subject: Re: Wired socket puzzle
Date: Tue, 1 Feb 2022 00:02:52 +0000
Organization: A noiseless patient Spider
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 by: Davey - Tue, 1 Feb 2022 00:02 UTC

On Mon, 31 Jan 2022 20:36:51 +0100
Marco Moock <mo01@posteo.de> wrote:

> Am Montag, 31. Januar 2022, um 12:01:26 Uhr schrieb Davey:
>
> > On Sun, 30 Jan 2022 13:41:05 +0100
> > Marco Moock <mo01@posteo.de> wrote:
> >
> > > Show the output of
> > > ip a
> > 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
> > group default qlen 1000 link/loopback 00:00:00:00:00:00 brd
> > 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo
> > valid_lft forever preferred_lft forever
> > inet6 ::1/128 scope host
> > valid_lft forever preferred_lft forever
> > 2: enp1s0f1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc
> > fq_codel state UP group default qlen 1000 link/ether
> > 80:fa:5b:94:d5:65 brd ff:ff:ff:ff:ff:ff inet 192.168.179.2/24 brd
> > 192.168.179.255 scope global dynamic noprefixroute enp1s0f1
> > valid_lft 21578sec preferred_lft 21578sec inet6
> > fe80::26a4:47a1:73f3:1275/64 scope link noprefixroute valid_lft
> > forever preferred_lft forever 3: wlp6s0: <BROADCAST,MULTICAST> mtu
> > 1500 qdisc noqueue state DOWN group default qlen 1000 link/ether
> > 38:fc:98:5b:6c:7e brd ff:ff:ff:ff:ff:ff
> >
> > > ip route show
> > 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
> > group default qlen 1000 link/loopback 00:00:00:00:00:00 brd
> > 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo
> > valid_lft forever preferred_lft forever
> > inet6 ::1/128 scope host
> > valid_lft forever preferred_lft forever
> > 2: enp1s0f1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc
> > fq_codel state UP group default qlen 1000 link/ether
> > 80:fa:5b:94:d5:65 brd ff:ff:ff:ff:ff:ff inet 192.168.179.2/24 brd
> > 192.168.179.255 scope global dynamic noprefixroute enp1s0f1
> > valid_lft 21578sec preferred_lft 21578sec inet6
> > fe80::26a4:47a1:73f3:1275/64 scope link noprefixroute valid_lft
> > forever preferred_lft forever 3: wlp6s0: <BROADCAST,MULTICAST> mtu
> > 1500 qdisc noqueue state DOWN group default qlen 1000 link/ether
> > 38:fc:98:5b:6c:7e brd ff:ff:ff:ff:ff:ff
> >
> > > ip -6 route show
> > ::1 dev lo proto kernel metric 256 pref medium
> > fe80::/64 dev enp1s0f1 proto kernel metric 100 pref medium
> > fe80::/64 dev enp1s0f1 proto kernel metric 256 pref medium
> >
> > > cat /etc/resolv.conf
> > # This file is managed by man:systemd-resolved(8). Do not edit.
> > #
> > # This is a dynamic resolv.conf file for connecting local clients to
> > the # internal DNS stub resolver of systemd-resolved. This file
> > lists all # configured search domains.
> > #
> > # Run "systemd-resolve --status" to see details about the uplink DNS
> > servers # currently in use.
> > #
> > # Third party programs must not access this file directly, but only
> > through the # symlink at /etc/resolv.conf. To manage
> > man:resolv.conf(5) in a different way, # replace this symlink by a
> > static file or a different symlink. #
> > # See man:systemd-resolved.service(8) for details about the
> > supported modes of # operation for /etc/resolv.conf.
> >
> > nameserver 127.0.0.53
> > options edns0
> >
> > > systemd-resolve --status --no-pager
> > Global
> > DNSSEC NTA: 10.in-addr.arpa
> > 16.172.in-addr.arpa
> > 168.192.in-addr.arpa
> > 17.172.in-addr.arpa
> > 18.172.in-addr.arpa
> > 19.172.in-addr.arpa
> > 20.172.in-addr.arpa
> > 21.172.in-addr.arpa
> > 22.172.in-addr.arpa
> > 23.172.in-addr.arpa
> > 24.172.in-addr.arpa
> > 25.172.in-addr.arpa
> > 26.172.in-addr.arpa
> > 27.172.in-addr.arpa
> > 28.172.in-addr.arpa
> > 29.172.in-addr.arpa
> > 30.172.in-addr.arpa
> > 31.172.in-addr.arpa
> > corp
> > d.f.ip6.arpa
> > home
> > internal
> > intranet
> > lan
> > local
> > private
> > test
> >
> > Link 3 (wlp6s0)
> > Current Scopes: none
> > LLMNR setting: yes
> > MulticastDNS setting: no
> > DNSSEC setting: no
> > DNSSEC supported: no
> >
> > Link 2 (enp1s0f1)
> > Current Scopes: DNS
> > LLMNR setting: yes
> > MulticastDNS setting: no
> > DNSSEC setting: no
> > DNSSEC supported: no
> > DNS Servers: 192.168.179.1
> > DNS Domain: ~.
> >
> > >
> >
>
> You should be able to reach servers via IPv4, but not via IPv6.
> Also check your DNS:
>
> dig google.com
>
> Then test a ping google.com
>

Thanks, but it's all working now. See my other posts.
Much obliged for the help and attention.
--
Davey.

1
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