kern/75121: Wrong behaviour of IFF_LINK2 bit in 6in6 gifs?

[Antonio Tapiador del Dujo]

>Number:         75121
>Category:       kern
>Synopsis:       Wrong behaviour of IFF_LINK2 bit in 6in6 gifs?
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Wed Dec 15 17:20:27 GMT 2004
>Closed-Date:
>Last-Modified:
>Originator:     Antonio Tapiador del Dujo
>Release:        FreeBSD 5.3-RELEASE i386
>Organization:
DIT - UPM
>Environment:
System: FreeBSD vagabundo.dit.upm.es 5.3-RELEASE FreeBSD 5.3-RELEASE #1: Tue Dec 14 21:08:08 CET 2004 root at vagabundo.dit.upm.es:/usr/src/sys/i386/compile/MH-4 i386


	
>Description:
I'm researching on IPv6 multihoming.
I need a generic 6in6 tunnel interface that accepts packets from any source, so I tried with the IFF_LINK2 as said in gif(4), but it didn't work.
Looking at the code, I found out the address checks are done regardless of the IFF_LINK2 (netinet6/in6_gif.c, line 318)
Shouldn't these checks take into account the IFF_LINK2?
Moving them inside the next if works as I expected.

>How-To-Repeat:
	
>Fix:

	


>Release-Note:
>Audit-Trail:
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