[systemd-devel] systemd-networkd, IPv6PrivacyExtensions=kernel, sysctl and devicenames

[Ede Wolf]

Mea culpa, I completely overlooked this. Big sorry.

And in addition I can confirm this behaviour. Doing this rename manually 
does keep the values.

I am just wondering, how can we apply that to the boot behaviour? It 
does give some meat to the thesis, that something else is going on, but 
how to find out?

At least with systemd-245/arch (not sure who is to blame) I cannot use 
the final name, and with systemd-241/deepin (debian) I cannot either, if 
the final name is a custom one through udev rule or .link file.



Am 23.05.20 um 15:13 schrieb Andrei Borzenkov:
> 23.05.2020 11:56, Ede Wolf пишет:
>>>
>>> tw:~ # systemctl stop NetworkManager.service
>>> tw:~ # ip l set dev enp0s5 down
>>> tw:~ # cat /proc/sys/net/ipv6/conf/enp0s5/use_tempaddr
>>> 1
>>> tw:~ # cat /proc/sys/net/ipv6/conf/enp0s5/addr_gen_mode
>>> 1
>>> tw:~ # echo 3 > /proc/sys/net/ipv6/conf/enp0s5/addr_gen_mode
>>> tw:~ # echo 2 > /proc/sys/net/ipv6/conf/enp0s5/use_tempaddr
>>> tw:~ # cat /proc/sys/net/ipv6/conf/enp0s5/use_tempaddr
>>> 2
>>> tw:~ # cat /proc/sys/net/ipv6/conf/enp0s5/addr_gen_mode
>>> 3
>>> tw:~ # ip l set dev enp0s5 name ififif
>>> tw:~ # ip l set dev ififif up
>>> tw:~ # cat /proc/sys/net/ipv6/conf/ififif/use_tempaddr
>>> 2
>>> tw:~ # cat /proc/sys/net/ipv6/conf/ififif/addr_gen_mode
>>> 3
>>>
>>
>> Thanks for taking the time to demonstrate this. But it does not comapre,
>> as you do not remane the interface.
> 
> May 23 09:05:52 tw.0.2.15 kernel: virtio_net virtio4 ififif: renamed
> from enp0s5
> 
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