pimd: IGMPv2 report msg may be longer than 8 octets

As per test case IGMP Conformance test case 5.6, report
messages longer than 8 octets should be accepted to support
future-backward compatibilty.

Fix the code as per RFC 2236 section 2.5:
    Note that IGMP messages may be longer than 8 octets, especially
    future backwards-compatible versions of IGMP.  As long as the Type is
    one that is recognized, an IGMPv2 implementation MUST ignore anything
    past the first 8 octets while processing the packet.  However, the
    IGMP checksum is always computed over the whole IP payload, not just
    over the first 8 octets.

Fixes: #10331

Signed-off-by: Mobashshera Rasool <mrasool@vmware.com>

0 files changed, 0 insertions, 0 deletions