When we rangeblock webhosts, some people have bots or other legitimate on their own dedicated subnets. When a legitimate user requests an exemption for their bot, as occured with the IPv6 rangeblock of OVH, we should not have to replace a single block with many (2^16+2^15...2^7=2^17-2^7). It would be very nice if we could do something like "Steward X exempted 2001:db8:2:/48 from the rangeblock 2001:db8::/32 (until June 2013)".
This would also go well with local rangeblocking.
- T121098: Allow to locally whitelist subsets of globally blocked IP ranges (to locally whitelist IP from global blocks)