Panic: if_simloop: attempted use of a free mbuf!

Pawel Jakub Dawidek nick at
Fri Nov 28 00:36:17 PST 2003


I'm reaching assertion from /sys/net/if_loop.c:270.

This is very easy to reproduce:

First you need to put loopback into promiscuous mode:

	# tcpdump -i lo0

Then try to connect to loopback, for example:

	# telnet 22


Pawel Jakub Dawidek                       pawel at
UNIX Systems Programmer/Administrator
Am I Evil? Yes, I Am!           
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 305 bytes
Desc: not available
Url :

More information about the freebsd-current mailing list