Just wondering how many of us use ipv6 for our local hosts, as with my router upgrade, my ISP only allows me to have 253 IP ipv4 addresses (and I don’t want to have to buy a new router/gateway, a 10gbe router/gateway is expensive).
Anyway, do you guys use statically assigned ULA addresses? Statically assigned global addresses? DHCPv6? SLAAC? What do you guys do for DNS resolution, avahi/mdns everywhere (given that ipv6 addresses seem to change all the time).
I’ve currently mostly gotten ipv6 working (dual stack) on machines I touch, my my k3s cluster is out of commission until I can figure out a way to not have them consume any precious ipv4 addresses.
I’m not even sure what prefix I want to choose for the cluster / service CIDR, should I be using a ULA or the one specified https://docs.k3s.io/installation/network-options#dual-stack-ipv4--ipv6-networking, 2001:cafe:42::
Does your ISP provides IPv6 ? If so, you might want to use that as it’ll be easier to setup than running your own dhcpv6 server or router.
Also, you gotta keep in mind that the world is not ready for full IPv6 yet, so you need to consider wether or not your cluster require ipv4 access or not. If it does, your best bet is to go with a dual stack, but it doesn’t solve your /24 limitation problem. The other solution is NAT64, but this techno is not quite ready in terms of FOSS solutions IMO, and it requires a separate router to do the NAT part for your, which you want to avoid apparently. So yeah, not many options here ^^