IPv6 Internet access, ISP p2p addressing /127 range

Hi Jari,

a IPv6 subnet of

/127

contains just the network and broadcast address without any usable IP addresses left over for your F5. Even if you're going to use the network and broadcast address for your Self/Floating IP you'll need at least 3 unique IPs within the same subnet which require at least a

/126

mask.

You may try to increase the subnetmask on your end (without informing your ISP) and then put the Float-IP into the range of the assigned

/127

subnet and the Self-IPs on the remaining non-assigned

/126

subnet. This will allow the ISP to communicate with your Floating-IP (important) but not your Self-IPs (most likely not required).

But I guess the better option would be to ask your ISP to increase the size of the transfer network to a mask of

/126

or even

/125

. IPv6 addresses aren't that rare... 😉

Cheers, Kai