On Fri, Jun 19, 2026 at 12:47 PM Marco Moock via NANOG < nanog@lists.nanog.org> wrote:
Am 19.06.26 um 21:21 schrieb Aaron C. de Bruyn:
I don't want to renumber everything because I ditch one ISP and switch to another.
Get your own prefix from RIR and let your ISP route it to your. If you switch the ISP, let the new ISP route it to you. It is even possible to have 2 ISPs that route the same prefix to you - without having you own ASN.
A SMB doesn't have to do that in IPv4 using RFC1918 and NAT. Pretty sure there's a cost to get a /48 from an RIR and probably costs with the various ISPs to route to you. While I'll admit I'm not an IPv6 expert by any means, it doesn't seem like there's a clean path from: "I have a stable internal network addressing scheme under IPv4 that's independent of whatever random ISP I'm using and it sucks I have to use NAT, but it's easy" to "There are enough addresses for everyone to have their own internet, so I'll come up with my own /48 (or get one for free like I had in IPv4) and simply 'connect' to my ISP and it works...no NAT and no port forwarding required...just nice simple firewall rules". -A