Geoff on IPv4 Exhaustion

Erik Kline ek at
Sun Nov 20 04:32:08 CET 2011

> You want to run a routing protocol on hosts? Are you going to add knobs
> to DHCP to configure it? Or walk to every host when you want to
> reconfigure the routing protocol?

The hosts already run a [mini]routing protocol: ICMPv6.

They can learn about multiple routers, and merge router preferences to
select which router should be used for a default router.  They can
detect the loss of a router and switch to using another router on
link.  They can learn about multiple prefixes on link, and cope with
when they go away.  They can even learn about non-default routes, via

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