Bug#929469: systemd-networkd: systemd-networkd: fails with "could not set address: Permission denied"

[Raphael Hertzog]

Hi,

On Wed, 26 Jun 2019, Michael Biebl wrote:
> I agree. While setting up an IPv6 address and at the same time disabling
> IPv6 on the kernel side could be seen as a misconfiguration, it might
> just as well be plain oversight on the admin's side.
> networkd behaving more sensibly in that case is certainly desirable,
> including logging about this issue (and afaics this is what the upstream
> patch set does via log_info).

Indeed, it prints a nice warning.

> TBH, I'm not even sure if it should be added to NEWS.
> NEWS entries are shown to almost everyone. If we flood users with NEWS
> entries they are not affected by, they will get into a habit of ignoring
> NEWS entries.
> Fwiw, I really struggled whether to add a NEWS entry for the
> video->render group change for exactly this reason.

The net result of this problem is a server that is not reachable after a
reboot so it can certainly be argued that it's worth documenting. It could
be a debconf prompt that happens only when systemd-networkd is active
and when ipv6 is disabled, but TBH the time spent in writing this code
would be just as well spent backporting the upstream fix.

I do believe it's worth a point release fix. Unfortunately, I don't have
any spare cycle to spend on this issue... I invested a lot of time in
debugging it already.

Cheers,
-- 
Raphaël Hertzog ◈ Debian Developer

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