Re: slaac-renum: Valid Lifetimes

[Fernando Gont <[e-mail]>]

Hello, Erik,

On 3/4/20 02:28, Erik Kline wrote:
> Whatever values/scaling is decided for these and other values via the 
> slaac-renum effort I do think we should make sure it's still possible to 
> sensibly follow the 7772 guidelines.

Indeed. What I'm asking is not to change the default router lifetime, 
but rather establish a relationship between the Router Lifetime and the 
other parameters.

And the point I'm trying to make is that extending the lifetimes beyond 
the Router Lifetime does not make sense. For instance, at the end of the 
day, e.g. the TCP abort interval is less than 10 minutes.

Once you are using, say, a Router Lifetime of 30 minutes, you're way 
over what e.g. your TCP connections would survive, anyway.

For a subnet where you have a single router, the router becoming invalid 
already means you have nowhere to send your packets. And if you are on a 
"multi-homed" subnet, as per RFC8028, use of a prefix is associated with 
the router that advertised it.

Thanks,
-- 
Fernando Gont
SI6 Networks
e-mail: [e-mail]
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