Op 26 okt. 2012, om 10:05 heeft Lorenzo Colitti het volgende geschreven: > On Fri, Oct 26, 2012 at 4:50 PM, Teco Boot <[email protected]> wrote: > The question is, does DHCP support the following: The MIF node has configured > a bench of addresses with SLAAC. Now it learns that there is a DHCP server > somewhere that has important info for the provision domain for one of the > addresses. Can the node get this info, with the already configured address > for that provisioning domain, with a unicast? Nodes will be updated anyway > for MIF, so let's go for it. Far better than merging info from multiple > provisioning domains into a single DHCP server. Not? > > Can we get by without a DHCPv6 server at all? In the Homenet BRDP draft, I removed the BRIO suboptions and emphasized DHCP. So yes, it can be done, with ND RA options. I'm afraid it is hard to get it right for existing hosts.
> > DHCPv6 servers are stateful and DHCPv6 is a protocol based on promises that > are valid for a predetermined amount of time. In a homenet, DHCPv6 servers > (i.e., CPE routers) may be plugged in and unplugged any time, and there is no > way to invalidate their information, which means the hosts are stuck. BRDP provides mapping between routers and prefixes. When border router is not reachable anymore, or prefix gets invalid, routers should inform hosts with ND PIO. This will work with existing hosts. DHCP info is not invalidated, it just isn't used anymore. > > Using a routing protocol and not using DHCPv6 solves this issue, because a > router is allowed to deprecate a prefix that has gone away even if it was > originally announced by someone else, and NUD will let hosts work around > broken routers in a reasonable amount of time. > <Homenetstrawman.pdf> A difference in BRDP and the strawman proposal is default gw route vs. walled garden more specific. I suggest handling both equivalent. In a way that is a tiny tweak in forwarding heuristic. Open for discussion. Many other BRDP functions are exactly as the proposal. I missed the meeting where this was presented. Bad luck. (BTW: BRDP is from far before Homenet, it was parked for a while...) Teco
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