On 6/12/15 1:11 AM, Lorenzo Colitti wrote: >> Ole said:
do we agree that a host that wakes up and has expired its last default router should restart router discovery?
In my mind this makes a lot of sense.
That's not necessary. For things to work well a host needs to be able to maintain connectivity even when asleep. So it needs to be able to receive unicast packets,
Agreed
and it needs to process RAs
The problem is that due to the design of the protocol "processing RAs" (Note, you did not specify unicast or multicast) is a known battery drainer. So it's awesome to say that wireless devices operating on a battery should simply stick to the protocol that was designed 15+ years ago when it was almost universally true that every networked device was connected to power and a LAN cable. But the world has moved on.
(e.g., so it can know that it has lost connectivity when it receives an RA with a default lifetime of 0).
The device should know if it loses connectivity if it actually, you know, loses connectivity. If the router hasn't expired yet it should be able to use it. The scenario you describe should be incredibly rare.
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