Tony Finch wrote: > Terry Lambert <tlambert2_at_mindspring.com> wrote: > >I can't wait for IPv6 stateless autoconfiguration plus SLPv2 so > >we can get rid of all this DHCP crap once and for all. 8-(. > >SLPv2 is used to find the gateway and DNS server, and after that, > >everything "magically works". > > I thought that the gateway address is (already) set up using > RFC 2461 router and prefix discovery. Won't work for any U.S. Cable modems or DSL, which is based on ATM (which is an NBMA-type link). It also doesn't work for ISDN ("iDSL"), which is an SDMS-type link and doesn't have full prefix information available. So basically, if you have broadband, it won't work. I think that any broadcast system, like 802.11a, 802.11b, 802.11g, Motorolla Canopy, etc.. will also have issues, since the machines are implicitly multihomed for the nearest one. Finally, I haven't seen a router with ND turned on, if it was even supported, so it wouldn't advertise or respond to any solicitations to advertise (basically, you'd end up with an ability to use this to fire off indirect DOS attacks against third parties, so it tends to be disabled, or at least that was the explanation I was given). Basically, this leaves the client machine playing by the ND rules in the "INCOMPLETE" state, with no one to talk to. Microsoft actually solved this problem for IPv4 in link.local with their "Internet Connection Sharing" product at one time, but then went back to DHCP in later releases for reasons unknown (maybe because of 802.11 base-station-mode cards becoming available for Windows... who knows?). In any case, ND is kind of like DHCP, in that explicit support for the protocol is needed in order for both the client and server to communicate, which is kind of what I thought people needed to get away from when I was talking about losing DHCP. -- TerryReceived on Wed Jul 30 2003 - 23:18:22 UTC
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