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Forum Discussion
IPv6 Activation With Verizon FiOS
With the Orbi router (and previous Netgear routers) I found the only way to activate IPv6 is first use Auto Config. This will then default to 6to 4 Tunnel and give you a Router's IPv6 Address On L...
FYI, when you first mentioned the RIPng 'trick' a few weeks ago, I researched RIPng, that's not a solution - maybe a bandaid of some sort. RIPng is a router-to-router distance-vector protocol. Once enabled, the router and satellites start (1) sending/receiving RIPng updates every 30 seconds to FF02::9 (UDP 521). and (2) advertising a hop-count metric (max 15) for every IPv6 prefix they know.
But Apple devices don’t run an RIPng client, so they ignore the multicast updates the Orbi would start sending. Apple phones, iPads or Macs rely on SLAAC / DHCPv6 plus Neighbor Discovery to get their addresses. (Androids do too, for example they ignore UDP 21/FF02::9, they reply on Router Advertisements + SLAAC like Apple devices for IPv6, etc.)
What probably helped was an indirect side-effect: enabling RIPng restarts the router’s IPv6 stack, forcing new Router Advertisements (RAs) and prefix-delegation to the satellites. That can temporarily patch over the firmware bug that’s causing IPv6 to vanish. However, I tried it today, and within 2 hours my iPhone 16 lost IPv6 - and it didn't even move off its charging stand!
So I am happy it works for ou at least - for now..