Server using non-defualt subnet prefix failed to join HDR InfiniBand multicast group.
Issue
- When using non-default subnet prefix with opensm clients using HDR Infiniband are unable to reliably join multicast groups after being rebooted.
- Allow handling MCMR join/leave requests where PortGID is with the default subnet prefix and OpenSM is configured to use non-default subnet prefix.
Environment
- Red Hat Enterprise Linux 7
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