Re: Odd NFS behaviour

[Elizabeth Barham <soggytrousers@yahoo.com>]

This is a wild guess but when I encountered errors of that nature
(operation completes but there is a long delay prior) it was a DNS
error.

tcpwrapper may be trying to reverse-dns the incoming host (you can
verify this using tcpdump). It fails and then uses the IP address but
this may take some time.  From tcpd(8):

       tcpd verifies the client host name that is returned by the
       address->name  DNS  server by looking at the host name and
       address that are returned by the name->address DNS server.
       If  any discrepancy is detected, tcpd concludes that it is
       dealing with a host that pretends to  have  someone  elses
       host name.

I experienced this even using numerical IP addresses as you are.

hth, Elizabeth


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