what is the secret behind 192.168.0.121

Erich Dollansky erich at alogt.com
Wed Dec 16 14:18:20 UTC 2015


Hi,

I have a very weird problem with my testing LAN. Only FreeBSD machines
are on the network. It all works as expected until I give the address
192.168.0.121 to a client machine. This machine is not able to mount
remote file systems via NFS despite this IP address is specifically
mentioned in /etc/exports.

I know that some routers/switches use this address as the default. But
I run into this problem even when I connect the NFS server and the
client directly.

I do not need to use this address but I would like to know why it does
not work.

Showmount for the specific NFS mount point shows this:

/usr/home                          192.168.0.121 192.168.0.122
192.168.0.99 192.168.0.112 192.168.0.116 192.168.0.117 192.168.0.118
192.168.0.119 192.168.0.120 192.168.0.123 192.168.0.124 192.168.0.125
192.168.0.126 192.168.0.127 192.168.0.128 192.168.0.129 

/etc/hosts.allow says this as the first effective line:

ALL : ALL : allow

Does anybody has an idea what could cause this?

Erich


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