Paul TBBle Hampson wrote: > > There're also "non-broadcast multiple access" link layers where router > > solicitation might be tricky; I'm not familiar with the details. I think > > 6to4 is one such; the IPv4 Internet can be treated as your link layer, but > > you can't send a packet to all IPv4 nodes looking for a router. > > Actually, IPv4 Anycast is supposed to do something like that, except with > routing trickery. You send to 192.88.99.1, and IP is supposed to drive your > packets to the nearest node that is advertising that address. It's kinda like
I just skimmed my O'Reilly book on IPv6 Essentials and (unless I skimmed it wrong) it looks like yes you can either manually configure a default gateway to use as a 6to4 relay, or you can send it to a IPv4 router anycast address and it'll be taken care of. Both ways should work. I think RFC 3056 specifies 6to4 with a manual setting and RFC 3068 defines the anycast address that can be used. > the ::ff02 (is that right?) routers-on-link IPv6 multicast link you use to > solicit routers. I'm pretty sure it's ff02::2, but that's because I have a book here in front of me =) > I doubt 6to4 does broadcast router solicition, but I expect it does something > similar to directed neighbour discovery when given a new link-local > destination > address (eg another 6to4 address). I should probably read up more on 6to4, but everything seems clear so far. I believe that answers my question. Thanks for the help guys! Orange
