Re: [PATCH] rpcbind: Only listen on requested hostnames for NC_TPI_COTS connections

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On 04/24/2012 05:29 PM, Jim Rees wrote:
Niels de Vos wrote:

   On 04/23/2012 06:22 PM, Chuck Lever wrote:
   >
   >  So you did check the mail archive?  I seem to recall other patches like
   >  this in the past, and that there is a reason why rpcbind works this way.
   >  I simply don't remember the specifics right at the moment.

   I did, but no messages about this subject come up for me... Maybe I'm looking
   in the wrong places :-/

I asked about this last November, and at that time Chuck referred me to the
mail archive too.  I couldn't find any discussion either.  But the behavior
is intentional, so I don't think you'll get a patch accepted.  I never did
discover the reason but I do have a workaround.  I just don't run rpcbind.

Many thanks for the pointer, I think this should be an acceptable solution.

Cheers,
Niels

This was the most informative response I got:

Date: Tue, 8 Nov 2011 19:01:51 +1100
From: Max Matveev<makc@xxxxxxxxxx>
Subject: Re: rpcbind -h
To: Jim Rees<rees@xxxxxxxxx>
Cc: Chuck Lever<chuck.lever@xxxxxxxxxx>, linux-nfs@xxxxxxxxxxxxxxx

Chuck's quote from the manpage reminded me - -h was used to work
around the address selection: if server has more then one address the
reply may use any of them. Some clients don't like it.

This issue should go away after

commit 74ef3df0236c55185225c62fba34953f2582da72
Author: Olaf Kirch<okir@xxxxxxx>
Date:   Wed Mar 2 10:09:24 2011 -0500

was added to libtirpc.

  rees>  As I said before, I was hoping for the equivalent of "portmap
  rees>  -l".  I was ready to code up a patch of some kind but now have
  rees>  a workaround (mount with nolock and don't run rpcbind at all).

iptables is another option.

max
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