Filtering Source Addresses on gw-internet

Jon Lewis jlewis at
Fri Aug 15 08:03:00 UTC 1997

On Thu, 14 Aug 1997, Greg Ketell wrote:

> One of the IS group Engineers ran some tests in the lab.
> (Thanks Craig).  It appears that, unfortunately, policy routing
> packets to Null0 is also a process switched operation.
> Apparently Null0 does not qualify as a Point-to-point interface
> with regards to the Set Interface command.

I vaguely remember hearing somewhere that routing to a loopback interface
was better than null0 for feeding unwanted packets into a black hole.  Is
that case perhaps not process switched? 

 Jon Lewis <jlewis at>  |  Unsolicited commercial e-mail will
 Network Administrator       |  be proof-read for $199/message.
 Florida Digital Turnpike    |  
______ for PGP public key____

More information about the NANOG mailing list