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[Bug 1371833] [NEW] dhclient is unable to parse zero-length option values (breaks DHCPv6)

 

Public bug reported:

Description:    Ubuntu 14.04.1 LTS
Release:        14.04

isc-dhcp-client:
  Installed: 4.2.4-7ubuntu12
  Candidate: 4.2.4-7ubuntu12
  Version table:
 *** 4.2.4-7ubuntu12 0
        500 http://mirror.internode.on.net/pub/ubuntu/ubuntu/ trusty/main amd64 Packages
        100 /var/lib/dpkg/status

Any option with a zero-length value, ie the common DHCPv6 option:

option dhcp6.reconf-accept ;

with isc-dhcp-client_4.2.4 produces a parser failure:

dhclient: /var/lib/NetworkManager/dhclient6-...-wlan0.lease line 35:
semicolon expected.

** Affects: isc-dhcp (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: dhcp (Fedora)
     Importance: Unknown
         Status: Unknown

** Patch added: "Patch from Fedora tracker"
   https://bugs.launchpad.net/bugs/1371833/+attachment/4209343/+files/0022-Parse-zero-length-option-values-successfully.patch

** Bug watch added: Red Hat Bugzilla #633318
   https://bugzilla.redhat.com/show_bug.cgi?id=633318

** Also affects: dhcp (Fedora) via
   https://bugzilla.redhat.com/show_bug.cgi?id=633318
   Importance: Unknown
       Status: Unknown

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https://bugs.launchpad.net/bugs/1371833

Title:
  dhclient is unable to parse zero-length option values (breaks DHCPv6)

Status in “isc-dhcp” package in Ubuntu:
  New
Status in “dhcp” package in Fedora:
  Unknown

Bug description:
  Description:    Ubuntu 14.04.1 LTS
  Release:        14.04

  isc-dhcp-client:
    Installed: 4.2.4-7ubuntu12
    Candidate: 4.2.4-7ubuntu12
    Version table:
   *** 4.2.4-7ubuntu12 0
          500 http://mirror.internode.on.net/pub/ubuntu/ubuntu/ trusty/main amd64 Packages
          100 /var/lib/dpkg/status

  Any option with a zero-length value, ie the common DHCPv6 option:

  option dhcp6.reconf-accept ;

  with isc-dhcp-client_4.2.4 produces a parser failure:

  dhclient: /var/lib/NetworkManager/dhclient6-...-wlan0.lease line 35:
  semicolon expected.

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