Why "svc: unknown version (-1 for prog 100003, nfsd)" is being printed in /var/log/messages in RHEL 5 ?

Solution Verified - Updated -

Issue

  • Following messages are seen on Red Hat Enterprise Linux 5 NFS server:

Snip from /var/log/messages

var/log/messages:Oct  5 14:29:25 server kernel: svc: unknown version (-1 for prog 100003 nfsd)
var/log/messages:Oct  6 14:27:55 server kernel: svc: unknown version (-1 for prog 100003 nfsd)

Environment

  • Red Hat Enterprise Linux 5 (NFS Server)
  • nfs-utils 1.0.9-70.el5.x86_64
  • Kernel 2.6.18-371.8.1.el5

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