David, if you can't connect by IP it's an issue with configuration, and
very unlikely to be a bug (unless your vpn server is some brand new
device that isn't supported).

Stephen, please file your own bug report. Using Kvpn is using a
completely different method which will not be affected by the same bugs,
but we can't know about them and fix them unless you file the bug
reports for your own system, since everyone's configuration is
different.

Paul, as per above, only subdomains of topcon.com will get resolved, are
you using those names to try to reach the private servers?

The in-addr.arpa entries are there for reverse resolution, and generally
not to be concerned with -- they will do the match from IP to name
(instead of from name to IP to get to reach the systems).

You can try to ping and access servers by IP address, this should always
be possible. If it's not, then there would be another thing that changed
rather than DNS that affects your VPN connections.

As for the DNS; try to resolve hostnames under topcon.com normally; and
again using "dig <domain name> @<the other nameserver from syslog that
isn't listed in nm-dns-dnsmasq.conf>". Perhaps it's just that one of the
DNS servers isn't responding properly.

While at it, could you please attach the output of 'ip route' ?

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https://bugs.launchpad.net/bugs/1013646

Title:
  VPN network connects but cannot access servers

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