#812186 isc-dhcp-client: does not renew lease (poss. interaction w/ systemd suspend/resume)

Package:
isc-dhcp-client
Source:
isc-dhcp
Description:
DHCP client for automatically obtaining an IP address
Submitter:
Christian Pernegger
Date:
2026-08-05 17:34:03 UTC
Severity:
normal
#812186#5
Date:
2016-01-21 10:42:41 UTC
From:
To:
Hello,

I'm using this (the jessie default) DHCP client on a fresh
install. This machine spends most of its time in suspend (S3) and is
only woken up when needed. The DHCP server gives out 24 h leases.

Last regular boot (i.e. not just resume from S3) was on the evening of
the 19th -- and that's the last the journal has heard from dhclient:

Jän 19 20:27:20 mrmackey dhclient[503]: bound to 192.168.0.25 -- renewal in 40765 seconds.
Jän 19 20:27:20 mrmackey ifup[478]: bound to 192.168.0.25 -- renewal in 40765 seconds.

Since then, there've been a few suspend/resume cycles but no
reboots. Obviously, the lease has long since lapsed, without any
discernable attempt to renew it. (Yes, dhclient is still running.)

This is the first time this install has gone this long without a
reboot, so I'm afraid it might not be a one-time glitch. Is it
possible that it doesn't like the way systemd handles suspend/resume?

Regards,
Christian Pernegger

P.S.: The leases file shows two leases for some reason.

#812186#10
Date:
2016-03-16 16:31:21 UTC
From:
To:
Hi,

I'd just wanted to add that
- version 4.3.3-8 (currently in testing) still has this problem
- dhcpcd5 works fine

So I'm switching my affected machines to dhcpcd5 for now, but in the
long rung I'd like to stay with the default dhcp client, so if there's
anything to test I can switch back anytime.

Regards,
Christian

#812186#17
Date:
2017-09-23 08:37:46 UTC
From:
To:
My dhclient.enp0s25.leases contains two leases and every few days it
won't renew the lease when waking up from suspend-to-ram. It works fine
on quite a few other days though.

I think this occured the first time after updating the system to
stretch (amd64).

Cheers,
   Tim

#812186#22
Date:
2026-08-05 17:31:09 UTC
From:
To:
Dear submitter,

as the package isc-dhcp has just been removed from the Debian archive
unstable we hereby close the associated bug reports.  We are sorry
that we couldn't deal with your issue properly.

For details on the removal, please see https://bugs.debian.org/1143544

The version of this package that was in Debian prior to this removal
can still be found using https://snapshot.debian.org/.

Please note that the changes have been done on the master archive and
will not propagate to any mirrors until the next dinstall run at the
earliest.

This message was generated automatically; if you believe that there is
a problem with it please contact the archive administrators by mailing
ftpmaster@ftp-master.debian.org.

Debian distribution maintenance software
pp.
Thorsten Alteholz (the ftpmaster behind the curtain)