Also an issue for me as I recently did a clean install of 12.04. I have several OpenVPN servers, and they worked perfectly fine under 11.04 and 11.10 but as soon I installed 12.04, I could no longer access the internet through them....I could connect fine, and ping individual IPs, which made me narrow it down to a DNS issue. Appearently, there were major changes to DNS stuff in 12.04 so I am not surprised it is currently broken....
More information about the changes can be found linked below, but basically, my temporary fix is to disable a new addon in 12.04 called "dnsmasq": http://www.stgraber.org/2012/02/24/dns-in-ubuntu-12-04/ Linux damir-ubuntu 3.2.0-24-generic #37-Ubuntu SMP Wed Apr 25 08:43:22 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to network-manager in Ubuntu. https://bugs.launchpad.net/bugs/994575 Title: dnsmasq does not update nameserver info after network change Status in “network-manager” package in Ubuntu: Confirmed Bug description: 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/994575/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
