= Сообщение: 6708 из 7402 ============================================= IPV6 = От : Victor Sudakov 2:5005/49 04 Jul 21 12:36:40 Кому : Dmitry Protasoff 04 Jul 21 12:36:40 Тема : Two ISPs and backup for a home network (dual-homing) FGHI : area://IPV6?msgid=2:5005/49+60e14a9f На : area://IPV6?msgid=2:5001/100.1+60ddc92c = Кодировка сообщения определена как: CP866 ================================== Ответ: area://IPV6?msgid=2:5001/100.1+60e19d4e ============================================================================== Dear Dmitry,
01 Jul 21 16:46, you wrote to me:
VS>> The original IPv4 was also miserable with its classful networks, VS>> RIPv1 etc. I still cannot imagine however what "real life" VS>> problem they are solving by creating NAT for ipv6.
DP> For example - rerouting traffic via VPN to get thru RKN's DPI. DP> Real life scenario :)
Why would you need NAT for that? Get a VPN/tunnel provider who offers a global /64 or /56 or even a /48, like HE does.
DP>>> translation. It's much more lightweight and easy to implement.
VS>> Either you translate only the higher 64 bits of the address, or VS>> the whole 128 bits of the address, you still rewrite the packet. VS>> True, you don't do PAT, that's why I said that it looks like a VS>> one-to-one IPv4 NAT (much like in AWS VPC "public" subnets).
DP> Yeah, but you can have "host" part the same for several uplinks and DP> change prefix only on NPTv6 gateway. It's the best ipv6 can offer for DP> you, sorry.
Too bad and a bit unexpected. There are/were rather complex things like Mobile IPv6 and HMIP, and they have not thought of a simple failover?
VS>> Nope, but I think $subj can be implemented today, e.g. via some VS>> field in RAs etc. In FreeBSD (and I'm sure in other IPv6 VS>> implementations) you can select the prerred source address, you VS>> only have to add some way to change it automatically when a "dead VS>> gateway" is detected.
DP> It adds more complexity and cannot be implemented easily in userland DP> across multiple OSes.
OK, let's start anew with a simple setup. If there are two routers in a home LAN advertising different global prefixes, and one of them goes offline, will IPv6 end hosts detect that and remove the corresponding addresses from their configuration?
