Invalid CIDR, but it's not

[William Edwards]

Why does Proxmox Mail Gateway think this is an invalid CIDR (it's not)?

 

[dcsapak]

we do not allow bigger subnets than /8
why do you want this?

as a workaround you can put in 2 networks fc00::/8 and fd00::/8

 

[William Edwards]

we do not allow bigger subnets than /8
why do you want this?

as a workaround you can put in 2 networks fc00::/8 and fd00::/8

Um, why would I not want this? I want my entire IPv6-only DMZ to be able to send mail.

 

[dcsapak]

yeah but it seem that is only relevant for fd00::/8

The block fc00::/8 is undefined. It has been proposed to be managed by an allocation authority, but this has not gained acceptance in the IETF.

from https://en.wikipedia.org/wiki/Unique_local_address

also, again you can put 2 trusted networks (fc00::/8 and fd00::/8) in and it should work