XFRNETS Error Messages

Cricket Liu cricket at menandmice.com
Fri Jan 4 18:43:27 UTC 2002


> I'm getting these error messages reported in my Application Log using
Event
> Viewer:
>
> XFRNETS element (63.76.46.0) mask problem (63.0.0.0)
> XFRNETS element (128.9.160.0) mask problem (128.9.0.0)
>
> What's causing those to be registered??  The IPs notated are not from our
> network.
> Any insight on this matter would be greatly appreciated.

It's been a long time, but it looks like you're using a BIND 4.9
name server and you have entries in it like this:

xfrnets 63.76.46.0&255.0.0.0 128.9.160.0&255.255.0.0

In other words, you're specifying more bits in the network than
you're using, according to the netmask.  Those entries should
probably be:

xfrnets 63.76.46.0&255.255.255.0 128.9.160.0&255.255.255.0

And, of course, you probably should upgrade to something newer
than BIND 4.

cricket

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