If you VPN to work from home (or even VPN to home from work, you may have issues resolving hostnames.
It’s trivial to solve in macOS AKA OSX.
E.g.:
$ cat /etc/resolver/fritz.box
nameserver 10.0.4.1
The server 10.0.4.1 (e.g. my fritz.box) will do the nameserving for the domain fritz.box, as soon as macOS can see the file.
I worried actually quite a while, until I found that solution. It’s very nice.
I actually have to access each local box with “.fritz.box” appended, but that’s not so bad.