North American Network Operators Group

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Re: multi-homing fixes

  • From: Randy Bush
  • Date: Fri Aug 24 20:54:29 2001

> Now that's confusing.. doesn't CIDR supposedly make it so that one IP is
> no better or worse then another?  Why do people base their filtering
> policies on where things are in the "Classful" space?  How is 64/8 any
> different then 216/8.. they allocate out of both of them, it's a crapshoot
> what you get since ARIN denys responsibility to provide routable IP space,
> yet there is space that is "more" routable than other space.

you may want to look at the rirs' web pages where they report what prefix
sizes have been allocated out of which /8s.  that is what some folk use for
prefix filtering policies.