[ipv6-wg at ripe.net] What is a site?
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Iljitsch van Beijnum
iljitsch at muada.com
Mon May 9 12:53:52 CEST 2005
On 9-mei-2005, at 12:40, Gert Doering wrote: > As for the /128s: I think that providing a /64 for a dialup router, > negotiating unique host-IDs with incoming PPP clients and then sending > RAs for the "shared" /64 down the PPP links will work fine for /128 > (auto-)assignment. I'm not sure, though, whether that's fully backed > by all relevant specs. I don't understand what you mean here... Suppose: host1 host2 +---------------+ +--------------------+ | / |ISP dial-up box+-ppp-+customer dial-up box+---customer subnet +---------------+ +--------------------+ | \ host4 host3 So the ISP and customer boxes negotiate interface identifiers. So far so good. But if the ISP box now starts sending out RAs, how do hosts 1 - 4 know this? For this to work the customer box must be a bridge and not a router, but this negates the whole idea behind the two boxes on opposite ends of the PPP link negotiating interface identifiers... What you need is a subnet for the PPP link and _another_ subnet for the customer's other stuff. This can be done with DHCPv6 prefix delegation, I think, but not with regular RAs.
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