Cisco pix udp packet size edns (bind8/9)

[Mark_Andrews at isc.org]

> Hi,
> 
> Just a quick update on this problem : cisco has just released version 
> 6.3.2 which allows you to modify the DNS/UDP max packet size :
> 
> fixup protocol dns maximum-length <size>
> 
> this seems to solve the EDNS problem that a lot of people had.
> 
> Now, what would be a decent value for max packet size ? 

	Whatever the DNS clients (in this case named) advertise: 4096.

> We had problems 
> mainly with Akamai'd web servers (like Yahoo!).
> 
> I think that :
> no sysopt nodnsalias inbound
> no sysopt nodnsalias outbound
> are new options too.
> 
>    ,
> Stephane
> 
> 
--
Mark Andrews, Internet Software Consortium
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: Mark.Andrews at isc.org