Alexander Motin 505feb8f37 Fix infinite loop in ng_iface, that happens when packet passes out via
two different ng interfaces sequentially due to tunnelling.

PR:		kern/134557
Submitted by:	Mikolaj Golub
Approved by:	re (kensmith)
MFC after:	3 days
2009-07-01 08:08:56 +00:00
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