nanog mailing list archives
Re: General question on rfc1918
From: Joe Abley <jabley () ca afilias info>
Date: Tue, 13 Nov 2007 10:10:26 -0500
On 13-Nov-2007, at 10:08, Drew Weaver wrote:
Hi there, I just had a real quick question. I hope this is found to be on topic.Is it to be expected to see rfc1918 src'd packets coming from transit carriers?
You should not send packets with RFC1918 source or destination addresses to the Internet. Everybody should follow this advice. If everybody did follow that advice, you wouldn't see the packets you are seeing.
The cynical answer, however, based on observation of real-life networks, is "yes" because people are naturally messy creatures.
We have filters in place on our edge (obviously) but should we be seeing traffic from 192.168.0.0 and 10.0.0.0 et cetera hitting our transit interfaces?I guess I'm not sure why large carrier networks wouldn't simply filter this in their core?
I can think of lots of things that large carrier networks (as well as smaller, non-carrier networks!) do that seem on the face of it to defy explanation, of which this is just one example :-)
Joe
Current thread:
- General question on rfc1918 Drew Weaver (Nov 13)
- Re: General question on rfc1918 Joe Abley (Nov 13)
- RE: General question on rfc1918 Darden, Patrick S. (Nov 13)
- Re: General question on rfc1918 Justin M. Streiner (Nov 13)
- RE: General question on rfc1918 Drew Weaver (Nov 13)
- Re: General question on rfc1918 Joe Greco (Nov 13)
- Re: General question on rfc1918 Sean Donelan (Nov 13)
- Another question on rfc1918 Michael Painter (Nov 23)
- Re: Another question on rfc1918 Robert E. Seastrom (Nov 23)
- Re: Another question on rfc1918 Randy Bush (Nov 23)
- Re: Another question on rfc1918 Bruce M Simpson (Nov 24)
- <Possible follow-ups>
- Re: General question on rfc1918 Robert Bonomi (Nov 13)
(Thread continues...)