Is there a way to transfer IPv6 adresses between servers
I just discovered the IP transfer tool under networking in the Linode dashboard and swapping IPv4 addresses works great. In my case it saved me a lot of work when it came to configuring email stuff and I didn't have to worry about getting a new IP of spam blacklists.
After a bit of testing I realized that some of my emails were flagged as spam and the reason was that they were sent with the new IPv6 address. To quickly fix this I just configured postfix to only use IPv4, but I would prefer to also support IPV6.
So my Question is, is there an easy way to swap IPv6 addresses between servers, and is there a reason why the Linode dashboard only support swapping IPv4 addresses ?
1 Reply
Sadly not.
I have raised this with the Linode team both on here and to their feedback email.
No other providers allow this either, so I can only assume there is some technical limitation.
The other option is to ask support to assign you an IPv6 range to your current Linode and configure Postfix to use an address from that pool (smtp_bind_address6.)
If you change your Linode, you can ask support to re-route your range to the new Linode so you still keep the same address.
It’s a manual process unfortunately and could take anywhere from a few minutes to several hours depending on how busy the team are, but at least you get to keep the same address.
(It’s also less likely to be on blocklists as providers tend to block an entire /64 block, which these are so no-one else will have got that range blocked.)