Thank you, Comcast.

Roland Dobbins rdobbins at
Fri Feb 26 17:25:01 UTC 2016

On 27 Feb 2016, at 0:16, Brielle Bruns wrote:

> UDP is a fun protocol - stateless, so blocking a DST of 53/UDP to the 
> customer also will block responses to recursive queries that originate 
> from SRC 53/UDP.

Which are relatively rare, these days.  Any device doing this by default 
is likely running out-of-date software that is abusable in multiple 

Roland Dobbins <rdobbins at>

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