[pkg-dhcp-devel] Bug#768860: isc-dhcp-client: goes into infinite loop with (invalid?) rfc3442-classless-static-routes

Christian Hofstaedtler zeha at debian.org
Sun Nov 9 18:01:49 UTC 2014


Package: isc-dhcp-client
Version: 4.3.1-5
Severity: important

Dear Maintainer,

With a server supplying this route configuration, dhclient-script
fails and dhclient enters an endless loop.

  option rfc3442-classless-static-routes 24, 192, 168, 122, 172, 16, 172, 100, 0, 0, 0, 0, 172, 16, 172, 1;
  option ms-classless-static-routes      24, 192, 168, 122, 172, 16, 172, 100, 0, 0, 0, 0, 172, 16, 172, 1;

dhclient output:

DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 5
DHCPREQUEST on eth0 to 255.255.255.255 port 67
DHCPOFFER from 172.16.172.100
DHCPACK from 172.16.172.100
/sbin/dhclient-script: 35: shift: can't shift that many
DHCPDECLINE on eth0 to 255.255.255.255 port 67
<repeat>

Note that I don't know if the static routes as given are a valid
configuration - I was experimenting with this when trying to
work around #764219.


Thanks,
Christian


-- System Information:
Debian Release: jessie/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'testing'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 3.16-3-amd64 (SMP w/8 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages isc-dhcp-client depends on:
ii  debianutils       4.4+b1
ii  iproute2          3.16.0-2
ii  isc-dhcp-common   4.3.1-5
ii  libc6             2.19-12
ii  libisc-export95   1:9.9.5.dfsg-5

isc-dhcp-client recommends no packages.

Versions of packages isc-dhcp-client suggests:
pn  avahi-autoipd  <none>
pn  resolvconf     <none>

-- no debconf information



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