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Re: Help debug : DNS failed when recover from suspend





Le lun. 28 oct. 2019 à 16:49, Andrei POPESCU <andreimpopescu@gmail.com> a écrit :
On Mi, 18 sep 19, 14:40:29, Prunk Dump wrote:
>
> -> Maybe a bug in the systemd configuration files that awake service
> in wrong order ? ( I will do soon a not related bug report to Debian,
> puppet.service does not contain any "After=" line )
>
> -> Maybe a bug in network-manager when the host receive a response
> from the dhcp server. As the ip can change maybe this make DNS failed.
> But NACK is not often sent. So it can't explain the problem
> completely. The problem appear even if the IP does not change.

Network Manager seems to be overkill for your needs. You might want to
try systemd-networkd and systemd-resolved.

See /usr/share/doc/systemd/README.Debian for how to enable them. There
is also a sample config that should be enough for your use-case.


Kind regards,
Andrei
--
http://wiki.debian.org/FAQsFromDebianUser

Thanks !

I have nearly found the bug origin. The problem is that when the computer suspend the isc DHCP client’s timer is not updated.

So the client wait too long before renew the lease and keep a expired one.

But I don’t now where to bug report.
-> I don’t if know if it’s a dhclient bug that don’t support suspend

-> or a systemd bug that don’t close dhclient before suspend bug

-> or a network manager bug that don’t update the dhclient timer 

I have asked to isc DHCP users but no one give me a tips actually :
https://lists.isc.org/pipermail/dhcp-users/2019-October/021886.html

Thanks for your help !

Baptiste

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