*** This bug is a duplicate of bug 1688018 ***
https://bugs.launchpad.net/bugs/1688018
** This bug is no longer a duplicate of bug 1639776
name resolution (dnsmasq) fails to send queries out after suspend/resume
reconnects the interface
** This bug has been marked a duplicate of bug 1688018
DNS server from vpn connection is not being used after network-manager
upgrade to 1.2.6
--
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to network-manager in Ubuntu.
https://bugs.launchpad.net/bugs/1672491
Title:
New NetworkManager breaks VPN DNS.
Status in network-manager package in Ubuntu:
Confirmed
Bug description:
Alright, this is going to be a frustrating bug for everyone involved I
expect, but here goes.
On Ubuntu 16.04, using a non-released VPN client (making this _much_
harder for anyone to reproduce), upgrading the network-manager
packages from 1.2.2-0ubuntu0.16.04.3 to 1.2.6-0ubuntu0.16.04.1 quite
handily broke DNS over the VPN.
And it broke it really oddly.
dnsmasq binds to socket 12 for the new interface, just fine.
strace shows that it does the sendto for the DNS request, and that the
poll calls are working, just fine.
tcpdump shows the response messages, they are coming back from the
correct host and port, going to my IP and the port that dnsmasq is
sending from.
There are no iptables rules involved, nothing is set to deny.
dnsmasq is never getting the response packet.
The request thus times out.
Doing a host or dig directly to the DNS server works just fine.
And this is completely reproducible, and goes away the moment I
downgrade back to 1.2.2-0ubuntu0.16.04.3.
Was there some change to how network-manager handles VPN
interfaces/tap0 in the new version?
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1672491/+subscriptions
--
Mailing list: https://launchpad.net/~touch-packages
Post to : touch-packages@lists.launchpad.net
Unsubscribe : https://launchpad.net/~touch-packages
More help : https://help.launchpad.net/ListHelp
