Hi, On Wed, Dec 22, 2021 at 08:09:59AM +0000, Vasilenko Eduard via ipv6-wg wrote: > Almost any business (even small) would like to have Internet resiliency in > the form of redundant connections through the different Carriers. > Then hosts should have PA addresses from different carriers. > > Hosts are not capable to choose properly which one address to choose for the > particular flow. > If the address of Carrier 1 would be used as the source for the packet going > to Carrier2 then Carrier2 would drop the packet as a result of spoofing > protection (uRPF check). > > If the connection to the carrier is lost then the respective PA address > should be withdrawn (by the way, not resolved problem in IETF). > > There are only 2 currently available solutions for Internet connections > resiliency: > 1. Request PI from RIR. Then the Internet table would be the size of all > businesses in the world. > 2. Use ULA internally and NPT (prefix translation to proper PA) on the CPEs > connecting to the Carrier.
3. use proper source based routing on the ISP routers -> see homenet WG. Of course NAT is good (https://www.youtube.com/watch?v=v26BAlfWBm8) but not really needed here. Gert Doering -- NetMaster -- have you enabled IPv6 on something today...? SpaceNet AG Vorstand: Sebastian v. Bomhard, Michael Emmer Joseph-Dollinger-Bogen 14 Aufsichtsratsvors.: A. Grundner-Culemann D-80807 Muenchen HRB: 136055 (AG Muenchen) Tel: +49 (0)89/32356-444 USt-IdNr.: DE813185279
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