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Re: [RRG] getting rid of longest match
On Feb 25, 2008, at 4:06 PM, Iljitsch van Beijnum wrote:
Yes, except that it wouldn't be hardcoded into the IP stack but
enforced through filters. So it could be /24 for 193.0.0.0/9 and /19
for 193.128.0.0/9.
The issue with overlap is: which one do you choose? Longest match
says the smallest block is the good one, but I don't think YouTube
appreciated that logic yesterday. If we ditch longest match we need
another rule. Allowing only one prefix size for a certain address
range is one way to resolve this, but others are also possible. For
instance, S-BGP or soBGP-like security mechanisms.
Or we just need those 'filters' you're referring to above, and leave the
protocols as is...
-danny
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