Split tunnel for peer-to-peer connection to display?

JPJazzJPJazz
in Mac OS X VPN Setup
Hi all -

I have a Macbook Pro that I use with an external iMac display.  The two are directly cable-connected via a Thunderbolt Bridge as described here (laptop IP: 172.154.34.13; iMac IP: 172.154.34.12):


To connect, I initiate Screen Sharing (VNC) from the iMac side and connect to the laptop's IP over this peer-to-peer connection (no router involved).

In addition, internet traffic to and from the laptop travels over Thunderbolt ethernet running on a different physical cable and completely different subnet (laptop IP address: 192.168.1.112, router 192.168.1.1).

So far so good, and I bet you can see where this is going...

Whenever I fire up PIA on the laptop I can no longer use my larger display in this manner.  Is there a way to restrict PIA to the 192.168.1/24 subnet only?  If not, is there a way to set up something like a static route to and from 172.154.34.13 (the laptop's display traffic IP) that would circumvent the PIA tunnel?  I'm a networking n00b but this should be possible - OpenVPN Connect, for example, does not affect my display setup when connecting to other VPN servers.

Thanks for any info from you networking gurus out there, and sorry if this is a basic question!

Comments

  • JPJazzJPJazz
    Update: I moved away from the official PIA client and have set up Tunnelblick per the directions here:


    I am now able to use my external display via the Thunderbolt Bridge while connected to PIA via ethernet, without having to modify the default .opvn files.

    Hopefully folks with more complex setups can tweak the .opvn files to their liking - search for "opvn split tunnel" for lots of info on the interwebs.
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