Am 03.04.2023 um 14:38:31 Uhr schrieb pinnerite:

> Interesting. I wonder what "valid_lft forever preferred_lft forever"
> means?

This is the lifetime of an IPv6 address assigned by SLAAC instead of
static configuration.

valid_lft LFT
the valid lifetime of this address; see section 5.5.4 of
RFC 4862. When it expires, the address is removed by the
kernel. Defaults to forever.

preferred_lft LFT
the preferred lifetime of this address; see section 5.5.4
of RFC 4862. When it expires, the address is no longer
used for new outgoing connections. Defaults to forever.

yossarian wrote:
> Every now and then my desktop comp wakes up with network cable disabled (disconnected). Any idea what is wrong?
> I tried many solutions from searching net but nothing solve the problem. Only thing witch help is restart system.
> Here is what I tried.
> sudo service network-manager restart
> sudo nmcli networking off
> sudo nmcli networking on
> ifup enp6s0
> sudo /etc/init.d/networking stop
> sudo /etc/init.d/networking start
> sudo systemctl restart networking
> sudo systemctl restart NetworkManager
> sudo ethtool enp6s0
> sensing cable connect
> sudo cat /sys/class/net/enp6s0/carrier
> ethtool enp6s0 | grep Link\ d
> ifplugstatus
>
> ~$ inxi -n
> Network:
> Device-1: Intel I211 Gigabit Network driver: igb
> IF: enp6s0 state: up speed: 1000 Mbps duplex: full mac: 40:b0:76:dc:78:a7
> IF-ID-1: virbr0 state: down mac: 52:54:00:7d:ed:a0
>
> I am looking for CLI command to restart sensing network cable.
>
> Thanks in advance.
>
>
>
>
How to disable Energy-Efficient Ethernet

https://community.toradex.com/t/how-to-disable-energy-efficient-ethernet/6602/2