[pkg-dhcp-devel] Bug#595190: isc-dhcp-client: goes into an infinite loop if server only answers on broadcast

[Alexandre Rossi]

Package: isc-dhcp-client
Version: 4.1.1-P1-9
Severity: normal

Hi,

I may have a misbehaving DHCP server :
--
$ cat /var/log/daemon.log.1 /var/log/daemon.log 2>/dev/null | grep
dhclient | cut -d':' -f4- | uniq -c
 18225  DHCPREQUEST on eth0 to 82.224.x.y port 67
     1  DHCPREQUEST on eth0 to 255.255.255.255 port 67
     1  DHCPACK from 82.224.x.y
     1  bound to 82.224.z.p -- renewal in 249667 seconds.
 15075  DHCPREQUEST on eth0 to 82.224.x.y port 67
# dhcping -v -s 255.255.255.255
Got answer from: 82.224.x.y
received from 82.224.x.y, expected from 255.255.255.255
no answer
# dhcping -v -s 82.224.x.y
no answer
--

My ISP's DHCP server gives a 3-day lease. When this leases expires, dhclient
sends a DHCP request to the known server but the server seems to only answer
on broadcast 255.255.255.255. As a result, my logs ar filling with DHCPREQUESTs
for three days every 6 days.

dhclient should handle this case (request on broadcast after a number of
unanswered requests).

Feel free to ask for more info.

Alex

-- System Information:
Debian Release: squeeze/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.32-5-amd64 (SMP w/2 CPU cores)
Locale: LANG=fr_FR.utf8, LC_CTYPE=fr_FR.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages isc-dhcp-client depends on:
ii  debianutils                   3.4        Miscellaneous utilities specific t
ii  isc-dhcp-common               4.1.1-P1-9 common files used by all the isc-d
ii  libc6                         2.11.2-3   Embedded GNU C Library: Shared lib
ii  libssl0.9.8                   0.9.8o-2   SSL shared libraries

isc-dhcp-client recommends no packages.

Versions of packages isc-dhcp-client suggests:
pn  avahi-autoipd                 <none>     (no description available)
pn  resolvconf                    <none>     (no description available)

-- no debconf information