Adding a route manually can be necessary sometimes. When on Linux, I know the command by head:

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sudo route add -net 10.67.0.0/16 gw 192.168.120.254

On the Mac the command is similar, but a bit different 🙂 Just as a note to myself and anyone else interested:

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sudo route -n add -net 10.67.0.0/16  192.168.120.254

This sets up a route to the 10.67.0.0/16 net through gateway 192.168.120.254. First one on Linux, second one on Mac OSX.