[OmniOS-discuss] rpcbind: t_bind failed

[Schweiss, Chip]

About once every week or two I'm having NFS connections start to collapse
to one of my servers.   Clients will lose thier connections of the the
course of several hours. The logs fill with these messages:

Dec 25 16:21:14 mir-zfs03 rpcbind: [ID 452059 daemon.error]  do_accept :
t_bind failed : Couldn't allocate address
Dec 25 16:21:14 mir-zfs03 /usr/lib/nfs/nfsd[27689]: [ID 396295
daemon.error] t_bind(file descriptor 188/transport tcp) TLI error 5
Dec 25 16:21:31 mir-zfs03 last message repeated 85 times
Dec 25 16:21:31 mir-zfs03 rpcbind: [ID 452059 daemon.error]  do_accept :
t_bind failed : Couldn't allocate address
Dec 25 16:21:32 mir-zfs03 /usr/lib/nfs/nfsd[27689]: [ID 396295
daemon.error] t_bind(file descriptor 188/transport tcp) TLI error 5
Dec 25 16:21:34 mir-zfs03 last message repeated 19 times
Dec 25 16:21:37 mir-zfs03 /usr/lib/nfs/nfsd[27689]: [ID 396295
daemon.error] t_bind(file descriptor 200/transport tcp) TLI error 5
Dec 25 16:22:17 mir-zfs03 last message repeated 116 times
Dec 25 16:22:21 mir-zfs03 /usr/lib/nfs/nfsd[27689]: [ID 396295
daemon.error] t_bind(file descriptor 206/transport tcp) TLI error 5
Dec 25 16:23:04 mir-zfs03 last message repeated 81 times

This is a fully updated OmniOS CE r151022.

I've tried restarting NFS services, but the only thing that has been
successful in restoring services has been rebooting.

I'm not finding anything useful via Google except the source code that
spits out this message.   HP-UX appears to have had the same issue that
they patched years ago.   I'm guessing shared NFS/RPC code.

Any clue as to the cause of this and how to fix?

-Chip
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