From: Jon B. Carter (Jon.Carter@post.serco.com)
Date: Tue Jul 02 2002 - 09:51:45 EDT
Hi all,
Once again, thanks to Bill Hassell for bailing me out on this one. I've now added patch PHNE_23003 and the problem has gone away.
As Bill correctly surmised, I have more than one LAN card in one of the offending machines.
Thanks again to all who replied.
Best regards,
Jon Carter
> I'm not running DNS on these machines at the moment and there is no
> /etc/resolv.conf.
>
> If I use nslookup on either the hostnames or IP addresses I get the same
> responses on all three machines. The answer is prefixed by FILES: so
> /etc/nsswitch.conf is OK.
>
> >From machine A I can rlogin to B & C
> >From machine B I can rlogin to A & C
> >From machine C I can rlogin to A but not B, I immediately get the error
> 'rlogind: Host address mismatch..'
>
> I have also checked /etc/rc.config.c/netconf and all looks correct.
>
> On all machines I can rlogin to themselves.
Do you have multiple LAN cards in any of the machines? (This includes
LAN cards with multiple IP addresses assigned to the same card)? If so,
this may be the problem:
--
rlogind: Host address mismatch
is generated by rlogind in the following case:
The remsh or rlogin client ip address (e.g. 1.2.3.4) is checked by
remshd or rlogind on the server using gethostbyaddr() to retrieve the
name of the client. host to ip address mapping is retrieved from
/etc/hosts on hostB by hostC.
Then remshd or rlogind on hostB will perform a reverse lookup of the
hostname using gethostbyname() to verify that the returned ip address is
equal to 1.2.3.4 Once again, /etc/hosts is used for host to ip address
mapping. However, the returned IP address is not 1.2.3.4 but is
probably 1.2.3.5 and this causes the error message.
This is a known problem, and is fixed in the latest r-commands patch
PHNE_21731. The fix is to run remshd and rlogind with the -s option to
suppress the reverse lookup.
--
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