[magma] Question about IGMP host implementation

Kunal Shah <kunal.shah@ericsson.com> Wed, 12 October 2011 00:38 UTC

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From: Kunal Shah <kunal.shah@ericsson.com>
To: "magma@ietf.org" <magma@ietf.org>
Date: Tue, 11 Oct 2011 20:38:31 -0400
Thread-Topic: Question about IGMP host implementation
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Subject: [magma] Question about IGMP host implementation
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Hi all,

Can an IGMPv2 host respond to a general query originated from a subnet other then its own?? RFC 2236 states:

""query received" occurs when the host receives either a valid
     General Membership Query message, or a valid Group-Specific
     Membership Query message.  To be valid, the Query message must be
     at least 8 octets long, and have a correct IGMP checksum.  The
     group address in the IGMP header must either be zero (a General
     Query) or a valid multicast group address (a Group-Specific Query)"

There is no requirement for the source address to be on the same subnet as the host.