Location Changer
It automatically changes OS X’s network location based on the name of Wi-Fi network and runs arbitrary scripts when it happens. This script is configured for Posten Norge and it's VPN, but feel free to edit it to your use.
This script is based on work by eprev
Installation & Update
Before you start, you need to create a network location with the name "No Proxy" (case-senstive and normal space), this can be done in your MacOS Preferences.
Install the script by running the following command in the terminal (you need admin privileges):
curl -L https://github.com/blt950/posten-locationchanger/raw/master/locationchanger.sh | bash
It will ask you for your password to install locationchanger to the /usr/local/bin directory.
Basic usage
Plug and play, everything is set up. If you connect to "posten.ikt" you'll get "Automatic" network location, all other networks will be set to "No Proxy". If you're on "No Proxy" and connect with Cisco AnyConnect to Posten VPN, it'll detect this and puts you to "Automatic".
Note: The VPN connection might require a few whiles before it's ready to go. It'll connect, then reconnect again with correct network location. It should be all ready to go once it says "Connected to Posten" the 2nd time.
Advanced usage
This script is probably not bulletproof, so it might do some things I didn't think of yet. If you're just curious or want to read the logs, you can do that in terminal with this command
cat /Users/YOUR USERNAME/Library/Logs/LocationChanger.log
The script is triggered on system configuration changes, so it's possible it triggers some times where you didn't change your internet connection but something else in your system changed. The script should however not change or restart your connection unless you change the WiFi og toggle your VPN.