Neighbor Advertisement" message (response to ICMPv6 "
Neighbor Solicitation" message sent by the Host before replying to the Echo Request) is dropped by the Security Gateway due to link collision in Connections kernel table (id 8158). The Echo Request times out while the source Host is waiting for the address of the target Host to be resolved.
By design, in ClusterXL High Availability mode, ICMPv6 "
Neighbor Advertisements" messages between the local networks are sent out of the cluster with Source IP address of the Active cluster member.
As the same time, periodic cluster ICMPv6 "
Neighbor Advertisement" messages, which advertise Cluster VIP address to all the local networks, are created with the same '
srs_i' link on the outbound. As a result, a link collision occurs.