IPv6 -> IPv4
I am hitting the external API with worker which has IP whitelisting
So I send them the whole list of Cloudflare IPs
the issue it seems like is that their system cannot handle IPv6
is there any solution
I see a toggle in setting but can't do anything about that
9 Replies
If they only have an A record for the API (no AAAA record) then the Worker will automatically use IPv4.
If they have an AAAA record for their API but their API can't handle IPv6 then that's a problem you'll need to discuss with them.
that's the problem I need them they don't need me
So it they wont change the infrastructure for me
they have mentioned that politely haha
No, I mean their API. I expect that if they don't properly handle IPv6 they won't accept it at all, in which case your Worker will automatically use IPv4 and will work fine.
its throwing error IP 2a06 blocked instead of full IP
Like it send for my personal computer
123.123.123.1.23 is blocked or something
for cloudflare it only days 2a06 so I assumed it's issue either ipv6
@Isaac | AS213339
If it's saying 2a06 blocked then their API is accepting IPv6 but blocking it for some reason. Do you know if they can't add a whitelist for IPv6 or won't?
Also all Workers use the same IPv6 so they probably need to look at the
CF-Worker header instead, that will tell them which customer is making the request.I gave them the list they added it
that I have to ask
But they are again all school so
isn't there a works-round or something
I don't think so, unfortunately.
🥺
this (same ipv6) only applies if the target site is using Cloudflare, if theyre not using Cloudflare they'll use the egress IPs which there are many of