named tcp dos?

[Browne, Stuart]

> -----Original Message-----
> From: bind-users [mailto:bind-users-bounces at lists.isc.org] On Behalf Of
> Randy Bush
> Sent: Friday, 3 August 2018 6:08 AM
> 
> >> ... are there that many folk doing tcp out there?
> > All name servers fall back to TCP when they receive truncated replies.
> 
> we know the protocol.  [ and we know folk have idiot middleboxen ]
> 
> what i was asking was the distribution of this in the wild.

We run about 300 TLD's on our DNS platform and get roughly 5-10% TCP queries. In comparison, we get about 25-30% IPv6 queries.

Those rates are fairly consistent.

> 
> randy

Stuart