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Help with IPv6
(lemmy.world)
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this post was submitted on 18 Jun 2024
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If you're getting a /64 from your ISP via DHCPv6, you likely need to send a prefix hint. I'd guess /60. Then you'll have multiple /64s to work with on your inside interfaces.
Who is the ISP?
If it's any use, here are the WAN IPv6 options (auto, manual, or IPv6CP Extension) for the ZTE-ZXHN-F670, it's set to auto right now:
And these are the available LAN settings:
I'm located in Vietnam; the ISP is Viettel (probably not useful information, but hey, why not).
Is it possible to send the hint from OPNsense itself? I mentioned in the original post that OPNsense is behind the ISP router (ZTE-ZXHN-F670) which I kind of don't want to touch due to the fact that the terminology is quite different and that the ISP people come over to run tests on it whenever there are service issues. Either way, I've already tried to search through the settings and couldn't find any options for setting the prefix hint on the WAN side. I'm open to digging though those settings again if you're familiar with the router.
Yes, to me it sounds like you're already getting a big enough prefix from your ISP (all devices getting a /64), but you'll have to request a bigger prefix from OPNsense. I believe it should give you the options to do this when you set the IPv6 mode to DHCPv6 on OPNsense, but I can't say if your ISP router will handle it.