When I connect to a VPN, all my network traffic is automatically routed through it. Is there a way to add exemptions to that? I don't know if adding exceptions has anything to do with the VPN protocol, but the VPN I'm using is of the OpenVPN protocol.

Speaking of OpenVPN, why is it not installed by default on Ubuntu installs unlike PPTP?

I could not get the list of IRCHighWay's servers, and this is the result I get trying to connect on XChat with running the bash script running:

* Looking up irc.irchighway.net
* Connecting to irc.irchighway.net (65.23.153.98) port 6667...
* Connected. Now logging in...
* You have been K-Lined.
* *** You are not welcome on this network.
* *** K-Lined for Open proxies are not allowed. (2011/02/26 01.21)
* *** Your IP is 173.0.14.9
* *** For assistance, please email [email protected] and include everything shown here.
* Closing Link: 0.0.0.0 (Open proxies are not allowed. (2011/02/26 01.21))
* Disconnected (Remote host closed socket).

The IP 173.0.14.9 is the one due to my VPN. I had forgotten to check ip route list before running the script, and this is the one after running it:

~$ ip route list
99.192.193.241 dev ppp0  proto kernel  scope link  src 173.0.14.9 
173.0.14.2 via 192.168.1.1 dev eth1  proto static 
173.0.14.2 via 192.168.1.1 dev eth1  src 192.168.1.3 
192.168.1.0/24 dev eth1  proto kernel  scope link  src 192.168.1.3  metric 2 
169.254.0.0/16 dev eth1  scope link  metric 1000 
default dev ppp0  proto static

Oh and running the script returned this output:

~$ sudo bash irc_route.sh
Usage: inet_route [-vF] del {-host|-net} Target[/prefix] [gw Gw] [metric M] [[dev] If]
       inet_route [-vF] add {-host|-net} Target[/prefix] [gw Gw] [metric M]
                              [netmask N] [mss Mss] [window W] [irtt I]
                              [mod] [dyn] [reinstate] [[dev] If]
       inet_route [-vF] add {-host|-net} Target[/prefix] [metric M] reject
       inet_route [-FC] flush      NOT supported

I ran the script after connecting to the VPN.