That's really the answer, for both v4 and v6, if you want to not have to renumber on provider changes every time. The answer's the same regardless of IPv4 vs IPv6, because the problems are the same. At least for this
So in IPv6 I either have to renumber because I ditched some ISP for another...or I have to pay for my addressing space and my ISPs have to support routing my address space, right?
Yes, exactly like you had to for IPv4. -----Original Message----- From: Marco Moock via NANOG <nanog@lists.nanog.org> Sent: Friday, June 19, 2026 3:47 PM To: nanog@lists.nanog.org Cc: Marco Moock <mm@dorfdsl.de> Subject: Re: IPv4 flag day 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. -- Gruß Marco Junk-Mail bitte an trashcan@stinkedores.dorfdsl.de _______________________________________________ NANOG mailing list https://lists.nanog.org/archives/list/nanog@lists.nanog.org/message/FG76NSBV...