Interface auto-cloning bug or feature?

Maxim Sobolev sobomax at FreeBSD.org
Fri Sep 19 11:33:20 UTC 2008


Alexey Shuvaev wrote:
>> [root at sp1 /usr/home/sobomax]# ifconfig -a
>> tun0: flags=8010<POINTOPOINT,MULTICAST> mtu 1500
>> tun1: flags=8010<POINTOPOINT,MULTICAST> mtu 1500
>> tun2: flags=8010<POINTOPOINT,MULTICAST> mtu 1500
>> tun3: flags=8010<POINTOPOINT,MULTICAST> mtu 1500
>>
> Me too.
> I have seen that using ppp(8) and security/vpnc.

That what has caused me to look into this issue. You can find patch for 
security/vpnc to prevent unbounded interface cloning here:

http://sobomax.sippysoft.com/~sobomax/vpnc.diff

-Maxim


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