> On 12 Jun 2015, at 5:31 , Lorenzo Colitti <lore...@google.com> wrote: > > On Thu, Jun 11, 2015 at 6:56 PM, Benedikt Stockebrand > <b...@stepladder-it.com> wrote: > they should at least send an RS when they wake up and ensure their > configuration is still up to date. > > That sounds like a bad idea. If devices send an RS every time the user turns > the screen on, and the router responds with a multicast RA, any medium-size > network or larger will have multicast RAs flying around every 3 seconds and > killing everyone's battery.
then it turns into a silly race… the network is forced to send RAs at very high frequency, because hosts that wake up with expired routers, don’t RS… RFC4861: "The host re-attaches to a link after being detached for some time.” I don’t see the purpose of a host re-soliciting unless the last default router is about to expire, NUD fails, strong indication that it has moved… do we agree that a host that wakes up and has expired its last default router should restart router discovery? (if I wrote the code on the host, I’d continue to use the expired router until I got a new one). cheers, Ole
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