Public bug reported:
I'm using Ubuntu 16.04 on a network where the DNS server is available on
both IPv4 and IPv6 (managed by a router running OpenWrt). As mentioned
in the dnsmasq manpage, I can see dnsmasq has both IPv4 and IPv6 entries
by running:
dig +short chaos txt servers.bind
I also have an IPv4-only OpenVPN connection configured through
NetworkManager (the VPN itself is IPv4-only, the NM connection is set to
Automatic for both IPv4 and IPv6), with no split-tunnelling. When I
connect to the VPN and query dnsmasq again, I see that the IPv4 entry
has been replaced by the VPN IPv4 DNS server, but the (local network)
IPv6 entry is still present.
** Affects: network-manager (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1615343
Title:
IPv6 DNS server not removed when connected to IPv4-only OpenVPN VPN
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