CONTAP-368955: cluster ping-cluster failed with "Larger than PMTU communication fails on 2 path(s)"

Issue

Cluster ping-cluster command failed with the following messages after upgrade to RCF 1.12a on Cisco Nexus 3232C.

[
Cluster-01::*> cluster ping-cluster -node Node-02
Host is Node-02
Getting addresses from network interface table...
Cluster Cluster-01-01_clus1 169.xxx.xxx.xxx Node-01 e0a
Cluster Cluster-01-01_clus2 169.yyy.yyy.yyy Node-01 e0b
Cluster Cluster-01-02_clus1 169.zzz.zzz.zzz Node-02 e0a
Cluster Cluster-01-02_clus2 169.aaa.aaa.aaa Node-02 e0b
Local = 169.zzz.zzz.zzz 169.aaa.aaa.aaa
Remote = 169.xxx.xxx.xxx 169.yyy.yyy.yyy
Cluster Vserver Id = 4xxxxxxxxxxx
Ping status:
....
Basic connectivity succeeds on 4 path(s)
Basic connectivity fails on 0 path(s)
................
Detected 9000 byte MTU on 4 path(s):
Local 169.aaa.aaa.aaa to Remote 169.xxx.xxx.xxx
Local 169.aaa.aaa.aaa to Remote 169.yyy.yyy.yyy
Local 169.zzz.zzz.zzz to Remote 169.xxx.xxx.xxx
Local 169.zzz.zzz.zzz to Remote 169.yyy.yyy.yyy
Larger than PMTU communication succeeds on 2 path(s)
Larger than PMTU communication fails on 2 path(s):
Local 169.aaa.aaa.aaa to Remote 169.xxx.xxx.xxx
Local 169.zzz.zzz.zzz to Remote 169.yyy.yyy.yyy
RPC status:
2 paths up, 0 paths down (tcp check)
2 paths up, 0 paths down (udp check)
]