Suspicious ipv4-specific "fix" for malformed CIDR address
I assume someone at some point asked "if i only want the single address, please don't make me type /32". @linus would know, he added it in the old mpt repo (0430e1738533e5c01bb226a33f5cf196fa64bec2, date Thu Dec 1 09:12:17 2022 +0100).
Fix: append /32 or /128 depending on if it is ipv4 or ipv6. Adding to stprov milestone, this is buggy error-prone behavior for ipv6.