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Published 20 hours ago • verified publisher icon ovh

IPv6 failover

Open dgeo opened this issue 2 years ago • 7 comments

Allow using IPv6 as IPv4 failover. For the moment one can only use server-assigned block.

dgeo avatar Sep 14 '22 19:09 dgeo

I disagree, IPv6 failover implemented as IPv4 failover would suck, they would be utterly useless with any good IPv6 setup. A great implementation (at least on the network side) of IPv6 is the one by online.net : each customer has a /48, and does as he wants with it. This way, I could easily give a /56 for a server (per RFCs), and a /64 for OpenVPN. If my server dies and I need a new one, I configure the dhcp6 on the new server with the previous DUID and all is good.

pinaraf avatar Sep 15 '22 18:09 pinaraf

=> https://github.com/ovh/infrastructure-roadmap/issues/117

pinaraf avatar Sep 15 '22 18:09 pinaraf

That actually makes more sense as an idea, but I'm curious about the implementation here.

diamondzxd avatar Sep 15 '22 18:09 diamondzxd

I disagree, IPv6 failover implemented as IPv4 failover would suck, they would be utterly useless with any good IPv6 setup. A great implementation (at least on the network side) of IPv6 is the one by online.net : each customer has a /48, and does as he wants with it. This way, I could easily give a /56 for a server (per RFCs), and a /64 for OpenVPN. If my server dies and I need a new one, I configure the dhcp6 on the new server with the previous DUID and all is good.

As stated in the other ticket: while ovh has to provide ipv6 failover for it to be even remotely useful, you undercomplicate the matter here. A big network has to segment IPs to be scalable, so just handing out a bigger prefix wouldn't solve the problem of failover for OVH, there is more logic involved.

wzrdtales avatar Sep 17 '22 20:09 wzrdtales

Being able to move IPv6 Addresses / Subnets between bare metal machines currently blocks my ability to adopt IPv6 and has done since IPv6 was able to be used for my workloads. The sooner we have some means to make the IP Addresses transient the better the ability to meaningfully adopt it

Wild1145 avatar May 29 '23 12:05 Wild1145

I can see a valid use case for "IPv6 failover", which would now be called "OVH Additional Prefix", of course :wink: Any small customers with just a couple of bare metal servers would be able to make a /64 prefix "float" between them, providing some level of IPv6 redundancy, even if only using a statically configured single /128 address on both.

thias avatar Oct 13 '23 11:10 thias

🚀 I'm pleased to announce early release of OVHcloud's Additional IPv6 offering a flexible way to manage next-gen IP addressing with vRack-enabled products! 👉 Register now and grab one of the first /56 blocks during Alpha product stage: https://labs.ovhcloud.com/en/additional-ipv6-with-vrack/

jslocinski avatar Apr 23 '24 11:04 jslocinski