** Changed in: network-manager-openvpn (Ubuntu)
Assignee: Aron Xu (happyaron) => (unassigned)
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https://bugs.launchpad.net/bugs/1390623
Title:
VPN with IPv6 connectivity but no IPv6 DNS server results in broken
DNS config
Status in NetworkManager-OpenVPN:
Fix Released
Status in network-manager package in Ubuntu:
Fix Released
Status in network-manager-openvpn package in Ubuntu:
In Progress
Bug description:
When connecting to a VPN that provides both a default route over IPv4
and IPv6, but only DNS servers over IPv4, you can end up with the IPv4
DNS servers set up as "split DNS". When that happens, the user is left
without a working DNS configuration.
See the attached log file for an example.
I think the cause is that the patch for avoiding split DNS on VPNs
with default routes[1] stops looking when it finds the first VPN
configuration with a default route. If that configuration happens to
be the IPv6-side of the VPN connection, then it will still add the
IPv4 configuration with split DNS.
A workaround is to simply add a IPv6 DNS server to the configuration
in addition to the IPv4 DNS servers. In that case, the IPv6 DNS server
is added without split DNS.
This has been tested with both Ubuntu 14.04 LTS and Xubuntu 14.04.
Package versions (on Xubuntu 14.04):
network-manager 0.9.8.8-0ubuntu7
network-manager-openvpn 0.9.8.2-1ubuntu4
openvpn 2.3.2-7ubuntu3
[1] http://bazaar.launchpad.net/~network-manager/network-
manager/ubuntu/view/head:/debian/patches/dnsmasq-vpn-dns-
filtering.patch
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