RCN headache, on day 1

[mcmanus at AppliedTheory.com (Patrick McManus)]

In a previous episode Dan Geer said...
:: 
:: 
::     In a previous episode Sheldon Dubrowin said...
::     
::     :: I've heard of using net 10 for the loopback addresses of routers,
::     :: but not usually in the backbone of a large ISP.
::     
::     it's done fairly commonly by some pretty big players.. imho it's not
::     really a good idea as some big networks filter rfc 1918 addresses at
::     ingress and in that case any traffic these routers generate won't get
::     back to the hosts on the other networks.. this is a problem with things
::     like traceroute and more importantly Path MTU discovery where the
::     router must get ICMP back to a host..
::     
::     but it is quite common.
:: 
:: http://www.ietf.org/rfc/rfc1918.txt
:: 
:: --dan
:: 
:: 

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