SUMMARY: NFS client failing

And the answer, for anyone that might be worried, was that an old, dead 
machine which used to do the same job had been mistakenly restarted 
after a power failure, and had come up far enough to configure its 
network interfaces.

To be honest I had thought that some other machine might be responding, 
but had discounted it because 1) there were no whinges about `Hardware 
address 'xx:xx:xx:xx:xx;xx' trying to be our address yyy.yyy.yyy.yyy', 
2) checking with `arp' gave the correct MAC address, and 3) the snoop 
trace looked so odd.  I still don't know where the whinging went, when I 
found the supposedly dead machine there was enough on its console.  I 
guess I must have just been unlucky about my timing with `arp'.

Anyway, problem solved thanks, our fault and my confusion.  The zombie 
machine's power lead is now unplugged as a hint.

Thanks to Crist J. Clark for reminding me about

ndd /dev/ip ip_strict_dst_multihoming

on multi-homed machines, even though that wasn't the issue here.

Cheers,

Rob

Rob McMahon wrote:
> I asked this on the solarisx86 list without success, so I was 
> wondering if anyone here can help.  Apologies for the rather long and 
> rambling post, I'm trying to include as much information as possible.
>
> Has anybody seen anything like this, or clues on how to solve it. We
>
> had a machine room power failure, after which everything came back, 
> except the NFS listserv service on a 20z running Solaris 10, talking 
> to an E3500 server running Solaris 8 fails with the following packet 
> trace:
>
>    listserv -> server       TCP D=2049 S=54738 Syn Seq=358115738 Len=0 
> Win=49640 Options=<mss 1460,nop,wscale 0,nop,nop,sackOK>
>      server -> listserv     TCP D=54738 S=2049 Syn Ack=358115739 
> Seq=770867544 Len=0 Win=49640 Options=<nop,wscale 0,nop,nop,sackOK,mss 
> 1460>
>    listserv -> server      TCP D=2049 S=54738 Rst Seq=358115739 Len=0 
> Win=0
>
> Other TCP services seem fine.  This listserv can talk to other servers 
> normally...
>
> SunOS listserv 5.10 Generic_118844-19 i86pc i386 i86pc


-- 
E-Mail:	Rob.McMahon@warwick.ac.uk		PHONE:  +44 24 7652 3037
Rob McMahon, IT Services, Warwick University, Coventry, CV4 7AL, England
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