Matthias Scheler wrote:
> On Thu, Feb 08, 2007 at 10:27:05PM +1100, Alasdair wrote:
>> I finally worked out(?) that it is a problem with a router that advertises
>> IPv6 but does not handle it.
> 
> The correct way to deal with that is to put "ip6mode=host" into
> "/etc/rc.conf". That will stop your NetBSD system from accepting
> to advertised bogus IPv6 prefix.
> 
>> telnet smtp.iprimus.com.au 25
>> Trying 1.0.0.0...
>> telnet: Unable to connect to remote host: Connection timed out
> 
> What nameserver are you using? Is that your ISP nameserver or the
> builtin nameserver of a cheap router appliance? Some of the later
> kind can get confused if a client ask them for anything other
> than A records.
> 

That's a possibility.
Or, what I discountered at dial on demand lines: the services sends 
bogus answers when the line is not yet up at that point in time.

> 	Kind regards
> 

Yours,
Andreas