So is the answer here just, "Use TCP"?  Like for DNSSEC records?

On Fri, Jun 21, 2013 at 1:47 PM, Andrew Sullivan <[email protected]>wrote:

> On Fri, Jun 21, 2013 at 04:34:10PM +0000, Viktor Dukhovni wrote:
> >
> > Fairly confident, I've tested two different platforms at two
> > different sites.  I'll send you the domain off list, please verify
> > for yourself. [ I don't want to publish the domain withour the owner's
> > permission. ]
>
> Thanks.  I tried this.
>
> If I use -b up to about 2300, I get back a truncated answer (so I'd
> retry over TCP).  If I go above that, however, it hangs.  This makes
> sense; I'm pretty sure my network is going to fragment at that point,
> and lots of people don't reassemble UDP fragments.
>
> So I think the problem here is that you can't effectively query such a
> large answer in most networks over UDP, because the EDNS0 buffer size
> you'd need for the answer to fit is too large for most networks.  I'm
> not sure that's evidence that the particular use is bad.
>
> Best,
>
> A
>
> --
> Andrew Sullivan
> [email protected]
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