IPv6 DNS server not removed when connected to IPv4-only OpenVPN VPN
Bug #1615343 reported by
Jeffery To
This bug affects 1 person
| Affects | Status | Importance | Assigned to | Milestone | |
|---|---|---|---|---|---|
| network-manager (Ubuntu) |
New
|
Undecided
|
Unassigned | ||
Bug Description
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 When I connect to the VPN and query dnsmasq again, I see that the IPv4 entry has been replaced by the VPN IPv4 DNS server, but the (local network) IPv6 entry is still present.
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