large organization nameservers sending icmp packets to dns servers.

Patrick W. Gilmore patrick at
Tue Aug 7 00:17:04 UTC 2007

On Aug 6, 2007, at 4:43 PM, Valdis.Kletnieks at wrote:
> On Mon, 06 Aug 2007 16:11:36 EDT, Matthew Crocker said:
>> But you could,  it isn't hard to dump a BGP view into a box from a
>> border router and use that map to determine the proper DNS records to
>> return.
> It's harder than it looks, given the number of people who pop up on  
> this list
> and ask how to get BGP to Do The Right Thing when 2 paths are the  
> same length
> but vastly differing in bandwidth, number-of-actual-hops, and/or  
> latency....

Plus you are assuming BGP knows the right answer.

People here are arguing ICMP Echo is a bad metric.  BGP makes ICMP  
look like the gold standard.


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