[Bug 1284606] Re: dhclient ignores dns-servers handled by dhcp-servers

[Stéphane Graber]

Not an isc-dhcp bug at all.

isc-dhcp will forward all DNS servers to resolvconf, which in turn will
generate resolv.conf.

However if you read resolvconf's documentation you'll notice that in the
event where one of the resolvers is a loopback address, it won't include
any other address in the resolv.conf file.


So everything you've seen is the expected behaviour, the problem is that you are expecting dnsmasq to magically know what upstream DNS servers to use.

** Changed in: isc-dhcp (Ubuntu)
       Status: Confirmed => Invalid

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https://bugs.launchpad.net/bugs/1284606

Title:
  dhclient ignores dns-servers handled by dhcp-servers

Status in “isc-dhcp” package in Ubuntu:
  Invalid

Bug description:
  While setting up network connections dhclient ignores dns-servers
  handled by dhcp-server. resolv.conf will only hold

  # Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
  #     DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
  nameserver 127.0.0.1
  search bfs.de

  dnsmasq doesn't find any useful dns-servers in this case and will fail
  to resolv "google.com" (or any other not locally known name).

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: isc-dhcp-client 4.2.4-7ubuntu8
  ProcVersionSignature: Ubuntu 3.13.0-12.32-generic 3.13.4
  Uname: Linux 3.13.0-12-generic x86_64
  ApportVersion: 2.13.2-0ubuntu5
  Architecture: amd64
  Date: Tue Feb 25 12:52:26 2014
  InstallationDate: Installed on 2014-01-31 (25 days ago)
  InstallationMedia: Ubuntu-Server 13.10 "Saucy Salamander" - Release amd64 (20131016)
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   LANG=de_DE.UTF-8
   SHELL=/bin/bash
  SourcePackage: isc-dhcp
  UpgradeStatus: Upgraded to trusty on 2014-01-31 (25 days ago)

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