Ubuntu
resolvconf package

  1. Bug #994575
  2. Comment #0

Comment 0 for bug 994575

Revision history for this message
Jeff Licquia (jeff-licquia) wrote : dnsmasq does not update nameserver info after network change

I have a VPN set up in Network Manager, which worked well when my system was running 11.10.

After upgrading to 12.04, I've noticed that DNS changes needed by the VPN aren't happening. Hosts that only resolve within the VPN won't resolve, and hosts that are supposed to resolve with different IP addresses inside the VPN don't.

I can see the new, proper nameserver configuration in /var/run/nm-dns-dnsmasq.conf. I can resolve properly if I query the name server directly, i.e. "host <name-to-resolve> <vpn-dns-server-ip>". And, if I use that IP address instead of the name, I can successfully do things like ssh. But simple resolution appears to still be using the old name server.

At one point, I killed off dnsmasq and wrote a new /etc/resolv.conf with the VPN name servers. That worked, but caused all manner of problems later.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: network-manager 0.9.4.0-0ubuntu3
ProcVersionSignature: Ubuntu 3.2.0-24.37-generic 3.2.14
Uname: Linux 3.2.0-24-generic x86_64
ApportVersion: 2.0.1-0ubuntu7
Architecture: amd64
Date: Fri May 4 09:04:23 2012
EcryptfsInUse: Yes
IfupdownConfig:
 auto lo
 iface lo inet loopback
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
IpRoute:
 default via 192.168.50.2 dev eth0 proto static
 169.254.0.0/16 dev eth0 scope link metric 1000
 192.168.50.0/24 dev eth0 proto kernel scope link src 192.168.50.222 metric 1
 192.168.50.0/24 dev wlan0 proto kernel scope link src 192.168.50.106 metric 2
NetworkManager.state:
 [main]
 NetworkingEnabled=true
 WirelessEnabled=true
 WWANEnabled=true
 WimaxEnabled=true
ProcEnviron:
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
RfKill:
 0: phy0: Wireless LAN
  Soft blocked: no
  Hard blocked: no
SourcePackage: network-manager
UpgradeStatus: Upgraded to precise on 2012-05-02 (1 days ago)
nmcli-dev:
 DEVICE TYPE STATE DBUS-PATH
 eth0 802-3-ethernet connected /org/freedesktop/NetworkManager/Devices/1
 wlan0 802-11-wireless connected /org/freedesktop/NetworkManager/Devices/0
nmcli-nm:
 RUNNING VERSION STATE NET-ENABLED WIFI-HARDWARE WIFI WWAN-HARDWARE WWAN
 running 0.9.4.0 connected enabled enabled enabled enabled disabled