tcp versus udp

[Ben Croswell]

Also if EDNS0 is in effect theoretically the max size would be 4096 bytes
before a truncate happened.

-- 
-Ben Croswell

On Mon, May 4, 2009 at 8:55 PM, Martin McCormick
<martin at dc.cis.okstate.edu>wrote:

> Matt Baxter writes:
> > When a response can not fit in a single UDP packet the server will mark
> > the
> > truncated flag (and respond with all the data it can inside the UDP
> > packet). That should trigger a client to resubmit the query via TCP. Zone
> > transfers are the most common use for TCP, but it can be required for
> > normal queries, although that is far from normal.
>
>         My thanks to you and to 2 other list members who replied
> off list. This confirms what I thought I remembered reading some
> time before.
>
> Martin McCormick
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