I encountered an undesired DNS behaviour when using L2TP/ipsec VPN.
I have DHCP configured Wi-Fi connection, which send dns servers and search domain (192.168.0.10, lan) VPN sends its own DNS server (10.0.0.2), search domain (intranet) is added manually in VPN DNS config settings.
I expect, when VPN is connected, to be still able to resolve local names, i.e some-host.lan. However, they become unresolvable.
quick check shows that the remote dns server is used to resolve local names.
shilishper@mac ~ % host -v some-host.lan
Trying "some-host.lan"
Host some-host.lan not found: 3(NXDOMAIN)
Received 106 bytes from 10.0.0.2#53 in 16 ms
Received 106 bytes from 10.0.0.2#53 in 16 ms
Actually, all dns queries are going to the remote server. I would expect that only queries for the configured domain (intranet) should go to that server. I played with the service order, but it didn't change anything.
Is anything can be done about this, programmatically?
PS new to macOS, but have extensive linux knowledge