mailing list archives
Re: Common operational misconceptions
From: Phil Regnauld <regnauld () nsrc org>
Date: Thu, 16 Feb 2012 14:44:37 +0100
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).