Now rpcinfo -p on server side shows :
program no_version protocole no_port 100000 2 tcp 111 portmapper 100000 2 udp 111 portmapper 100021 1 udp 32776 nlockmgr 100021 3 udp 32776 nlockmgr 100021 4 udp 32776 nlockmgr 100021 1 tcp 54131 nlockmgr 100021 3 tcp 54131 nlockmgr 100021 4 tcp 54131 nlockmgr 100003 2 udp 2049 nfs 100003 3 udp 2049 nfs 100003 4 udp 2049 nfs 100003 2 tcp 2049 nfs 100003 3 tcp 2049 nfs 100003 4 tcp 2049 nfs 100005 1 udp 658 mountd 100005 1 tcp 661 mountd 100005 2 udp 658 mountd 100005 2 tcp 661 mountd 100005 3 udp 658 mountd 100005 3 tcp 661 mountd 391002 2 tcp 848 sgi_fam 100024 1 udp 32784 status 100024 1 tcp 42688 status 100011 1 udp 878 rquotad 100011 2 udp 878 rquotad 100011 1 tcp 881 rquotad 100011 2 tcp 881 rquotad
And everything is working as expected.
Now rpcinfo -p on server side shows :
program no_version protocole no_port
100000 2 tcp 111 portmapper
100000 2 udp 111 portmapper
100021 1 udp 32776 nlockmgr
100021 3 udp 32776 nlockmgr
100021 4 udp 32776 nlockmgr
100021 1 tcp 54131 nlockmgr
100021 3 tcp 54131 nlockmgr
100021 4 tcp 54131 nlockmgr
100003 2 udp 2049 nfs
100003 3 udp 2049 nfs
100003 4 udp 2049 nfs
100003 2 tcp 2049 nfs
100003 3 tcp 2049 nfs
100003 4 tcp 2049 nfs
100005 1 udp 658 mountd
100005 1 tcp 661 mountd
100005 2 udp 658 mountd
100005 2 tcp 661 mountd
100005 3 udp 658 mountd
100005 3 tcp 661 mountd
391002 2 tcp 848 sgi_fam
100024 1 udp 32784 status
100024 1 tcp 42688 status
100011 1 udp 878 rquotad
100011 2 udp 878 rquotad
100011 1 tcp 881 rquotad
100011 2 tcp 881 rquotad
And everything is working as expected.