[149835] in North American Network Operators' Group
Re: Common operational misconceptions
daemon@ATHENA.MIT.EDU (Phil Regnauld)
Thu Feb 16 08:45:37 2012
Date: Thu, 16 Feb 2012 14:44:37 +0100
From: Phil Regnauld <regnauld@nsrc.org>
To: Mark Andrews <marka@isc.org>
In-Reply-To: <20120216031208.132481D76BD5@drugs.dv.isc.org>
Cc: "nanog@nanog.org" <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
Mark Andrews (marka) writes:
> If you want to know if your resolver talks IPv6 to the world and
> supports 4096 EDNS UDP messages the following query will tell you.
>
> dig edns-v6-ok.isc.org txt
>
> Similarly for IPv4.
>
> dig edns-v4-ok.isc.org txt
>
9.8.1P1 on a dual stacked native v6 host: I'm seeing TC on both answers,
the difference is the TCP answer comes through on v4 but v6 gives SERVFAIL.
Don't see any v6 fragments (that'd be a problem since PF doesn't handle
them on this host).
P.
