Bug#917128: udev 240 breaks network interface naming

[Michael Biebl]

Is this still reproducible with v244?
In case you are using stable, there is a v244 backport for buster available.

On Fri, 24 Jan 2020 21:23:17 -0500 Dragan Tubic <dragan.tubic at gmail.com>
wrote:
> I have the same problem
> 
>  Failed to rename network interface 2 from 'enxXXXXXXXXXXX to 'wan':
> Device or resource busy
> 
> I noticed the following line in the journal that before udevd fails,
> 
>  systemd-networkd[293]: enxXXXXXXXXXXX : IPv6 successfully enabled
> 
> so I tried to disable ipv6 in
>  /etc/sysctl.conf
> by setting
> 
> net.ipv6.conf.all.disable_ipv6 = 1
> 
> net.ipv6.conf.default.disable_ipv6 = 1
> 
> net.ipv6.conf.lo.disable_ipv6 = 1
> 
> which after rebooting solved the problem. Not sure if I stumbled upon
> the right solution but I hope it helps.
> 
> 

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