MTU handling in 6RD deployments

Mikael Abrahamsson swmike at
Fri Jan 17 17:15:52 CET 2014

On Fri, 17 Jan 2014, Mikael Abrahamsson wrote:

> On Fri, 17 Jan 2014, Templin, Fred L wrote:
>> Sorry, I was looking at the wrong section. I see now that Section 8 is 
>> talking about a method for a CE to send an ordinary data packet that loops 
>> back via the BR. That method is fine, but it is no more immune to someone 
>> abusing the mechanism than would be sending a ping (or some other NUD 
>> message). By using a ping, the BR can impose rate-limiting on its ping 
>> responses whereas with a looped-back data packet the BR really can't do 
>> rate limiting.
> You don't ping the BR, you ping yourself via the BR. The BR only forwards the 
> packet.

My bad, I didn't read your text properly. Why would the BR want to 
rate-limit data plane traffic?

Mikael Abrahamsson    email: swmike at

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