Bruce M Simpson fd963b9929 Fix a regression where DVMRP diagnostic traffic, such as that used
by mrinfo and mtrace, was dropped by the IGMP TTL check. IGMP control
traffic must always have a TTL of 1.

Submitted by:	Matthew Luckie
MFC after:	3 days
2010-04-27 14:14:21 +00:00
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2010-04-26 12:03:55 +00:00
2010-04-07 16:29:10 +00:00
2010-02-18 22:10:55 +00:00
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