nanog mailing list archives

Re: 16-bit ASN kludge


From: Valdis.Kletnieks () vt edu
Date: Fri, 03 Dec 2004 18:08:33 -0500

On Fri, 03 Dec 2004 16:36:39 CST, John Dupuy said:
Along these lines, one could leave the transit AS networks alone if a 
parallel 16 bit ASN space were created. Essentially, any non-transit 
network would have it's non-public ASN retranslated NAT-style by upstream 
transit network border routers. Only the border routers would have to be 
changed. They would have to differentiate between public ASN X and 
non-public ASN X (same number) based on the which side of the router the 
ASN was learned from.

So given the lack of trouble with NAT sites leaking rfc1918 addresses, you
foresee no problems with sites accidentally leaking the non-public ASN's, right?

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