Public bug reported:
I'm using Ubuntu 16.04, connected to the same network by both Ethernet
and Wi-Fi. When I query dnsmasq by running:
dig +short chaos txt servers.bind
I see only one set of DNS servers (one IPv4, one IPv6); not sure if it's
NetworkManager or dnsmasq that is de-duping the servers from both
connections.
When I connect to an OpenVPN connection (configured through NM,
IPv4-only, with no split-tunnelling) and query dnsmasq again, I see that
the VPN DNS server is present, but the local IPv4 DNS server is also
still used (dnsmasq reports two IPv4 servers, one IPv6 server). (I filed
bug #1615343 regarding the local IPv6 DNS server not being removed.)
** Affects: network-manager (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1615347
Title:
Local DNS server not removed when connected to OpenVPN network, when
connected by both Ethernet and Wi-Fi
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