[151980] in North American Network Operators' Group
Re: DNS noise
daemon@ATHENA.MIT.EDU (Jared Mauch)
Fri Apr 6 16:50:24 2012
From: Jared Mauch <jared@puck.nether.net>
In-Reply-To: <D2231FE8-F572-4D47-A230-739532035621@virtualized.org>
Date: Fri, 6 Apr 2012 16:49:48 -0400
To: David Conrad <drc@virtualized.org>
Cc: NANOG list <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Apr 6, 2012, at 4:44 PM, David Conrad wrote:
> However, I would be interested in hearing what the excuses are for =
folks not implementing BCP38 these days.
Easy:
1) hardare support varies
2) implementing bcp-38 drives customer support costs up in cases where =
the customer is doing something weird "e.g.: using toms isdn-dial backup =
to source return packets".
3) customers can't be trusted to give a complete list of valid source =
addresses
4) asymmetric or highly kinky routing exists more than one would like to =
admit
There are cases where it's fairly inexcusable:
Fixed broadband providers (static IP address or dynamic to a customer =
port/pool)
CGN exit points
Static routed customers (They shouldn't be doing asymmetric routing)
The real reason imho.. is #2 above. desire to keep unnecessary support =
calls from your call center.
- Jared=
