How to detect VPN disconnection with vpnc?

Posted by Abhinav on Super User See other posts from Super User or by Abhinav
Published on 2009-09-12T17:31:37Z Indexed on 2010/04/08 18:33 UTC
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Filed under:

linux

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ifconfig

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vpnc

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networking

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vpn

What is the easiest way to detect that a vpnc connection on Linux/Ubuntu has disconnected?

Manually, I think the way to detect is to check whether the interface (tun0) appears in /sbin/ifconfig output. Is there a better way to find out immediately, so that a script can be run to restart the connection?

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