nsupdate fails with tsig error.

[Dan Farrell]

On Sun, 2 Dec 2007 22:56:04 +1100 (EST)
Glenn Satchell <Glenn.Satchell at uniq.com.au> wrote:

> The issue seems to be when the key goes via UDP and NAT. Are there any
> NAT settings on the router where it is trying to be "helpful" in some
> way? Eg, rewriting dns requests or something similar. What type of
> router is it?
> 
> regards,
> -glenn

Is there a firewall on this router?  If so, is it allowing connections
over both UDP and TCP?  I believe both are used for updates between
servers.