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Cisco Bug: CSCvt21259 - IPV4 Multicast packets are unexpectedly replicated to underlay interface of mGRE tunnels

Last Modified

Sep 19, 2020

Products (1)

  • Cisco IOS

Known Affected Releases

15.7(3.0b)M4

Description (partial)

Symptom:
Unexpected multicast packets are seen on physical interface, that is underlay for mGRE tunnel.

Conditions:
- mGRE tunnel is configured on a device (without encryption);
- multicast packets are sent on the interface (including OSPF/PIM/IGMP and any other)
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Bug Details Include

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  • Status
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