Many network operators, including the one where I work, use IPv4 /31 blocks for point-to-point links instead of /30s because it reduces address consumption by 50%. The IP allocator treats /31s as too small to be usable, which means we can't deploy containers with point-to-point links on network interfaces.
This issue has been opened to put a flag in the sand; I will be developing a patch to fix this and will submit a PR once it has been wrung out.
Many network operators, including the one where I work, use IPv4 /31 blocks for point-to-point links instead of /30s because it reduces address consumption by 50%. The IP allocator treats /31s as too small to be usable, which means we can't deploy containers with point-to-point links on network interfaces.
This issue has been opened to put a flag in the sand; I will be developing a patch to fix this and will submit a PR once it has been wrung out.
Side note: I corrected a similar probem in Docker two years ago.