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Barracuda SSL VPN

If I use the Tunnelblick client on my Mac to connect to the SSL VPN, why do I get 2 IP addresses?

  • Type: Knowledgebase
  • Date changed: 6 years ago
Solution #00006072


 
Scope:

Barracuda SSL VPN, all firmware versions
Mac OS X Mountain Lion


Answer:

NOTE: If you use the native Tunnelblick client to connect to the Network Connector rather than using the Barracuda Network Connector client, upon connecting you may notice that the client gets 2 IP addresses (1 IP from the SSL VPN, the other IP from your LAN's DHCP server).


This is due to a bug in tunnelblick's up command script that attempts to get an address via DHCP even after it has had an IP pushed to it by the SSL VPN.


It is possible to fix this on the client by editing the following file:


/Applications/Tunnelblick.app/Contents/Resources/client.up.tunnelblick.sh


Delete lines 572-574, which should read:


ipconfig set "$dev" DHCP


configureDhcpDns &


--
Then save the file. This ensures that the client will not attempt to get a second IP address.