Package: isc-dhcp-client
Version: 4.3.3-5
Severity: important
Tags: upstream
Dear Maintainer,
(tagged as 'upstream' because I find it unlikely that the issue is
Debian-specific; I'm not 100% certain, though.)
I have a Chromebook (specifically, an Acer C720) that I have loaded with
Stretch. The RTC is powered by the main system battery, rather than a
dedicated coin cell. As a result, if the battery dies, the RTC data will
become corrupt and read a quasi-random time at the next boot. Due to the
nature of Chromebooks, I expect this occurs with the expectation that the
issue will self-correct as soon as the user goes online and NTP syncs.
However, with Stretch installed, we have a bootstrapping problem: If the
system clock is too far in the future (I suspect a 2038 bug), dhclient
errors while acquiring the lease, preventing it from going online, thus
preventing an NTP sync to fix the clock.
I have reproduced this problem three times. The first two involved a dead
battery. The third was a repro with the latest version (4.3.3-5) using
sudo date -s 'Sat Jun 4 10:38:14 EDT 2135'
then telling NetworkManager to disconnect and reconnect to my wireless network.
Here is an excerpt of the relevant details from the last:
stevie@ikaros:~$ date
Sat Jun 4 10:38:14 EDT 2135
stevie@ikaros:~$ less /var/log/daemon.log
Jun 4 10:38:27 ikaros dhclient[2113]: DHCPDISCOVER on wlp1s0 to
255.255.255.255 port 67 interval 3
Jun 4 10:38:27 ikaros dhclient[2113]: Unable to set up timer: out of range
Jun 4 10:38:27 ikaros dhclient[2113]:
Jun 4 10:38:27 ikaros dhclient[2113]: If you think you have received this
message due to a bug rather
Jun 4 10:38:27 ikaros dhclient[2113]: than a configuration issue please read
the section on submitting
Jun 4 10:38:27 ikaros dhclient[2113]: bugs on either our web page at
www.isc.org or in the README file
Jun 4 10:38:27 ikaros dhclient[2113]: before submitting a bug. These pages
explain the proper
Jun 4 10:38:27 ikaros dhclient[2113]: process and the information we find
helpful for debugging..
Jun 4 10:38:27 ikaros dhclient[2113]:
Jun 4 10:38:27 ikaros dhclient[2113]: exiting.
As soon as I did
sudo date -s '2015-10-14'
then my network connection came right up and I was able to submit this bug
report.
-- System Information:
Debian Release: stretch/sid
APT prefers testing
APT policy: (500, 'testing')
Architecture: amd64 (x86_64)
Kernel: Linux 4.2.0-1-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
Versions of packages isc-dhcp-client depends on:
ii debianutils 4.5.1
ii iproute2 4.1.1-1
ii libc6 2.19-22
ii libdns-export100 1:9.9.5.dfsg-12
ii libisc-export95 1:9.9.5.dfsg-12
Versions of packages isc-dhcp-client recommends:
ii isc-dhcp-common 4.3.3-3
Versions of packages isc-dhcp-client suggests:
ii avahi-autoipd 0.6.31-5
pn isc-dhcp-client-ddns
pn resolvconf
-- no debconf information
