Mark Andrews wrote:
Look at CableLabs specifications. There is also RFC 7084, Basic Requirements for IPv6 Customer Edge Routers which CableLabs reference.
One of a stupidity, among many, of IPv6 is that it assumes links have millions or billions of mostly immobile hosts and define very large (but not large enough for billions or even millions) minimum interval between ND messages, which is applicable to links with much smaller number of hosts. So, though rfc7084 says; it MUST explicitly invalidate itself as an IPv6 default router on each of its advertising interfaces by immediately transmitting one or more Router Advertisement messages with the "Router Lifetime" field set to zero [RFC4861]. rfc4861 forbids two RAs sent with minimum interval less than 16 seconds. Is it "immediately transmitting one or more Router Advertisement messages"? Masataka Ohta