Steps to reproduce

1. Browse Special:Log/checkuser-temporary-account
2. Enter User:1.1.1.0/24 as target
3. Submit query

Expected result

I see query for…

1. Anyone who queried 1.1.1.0/24, AND
2. Anyone who queried a single IP within the range, for example 1.1.1.1 or 1.1.1.234

Actual result

I only see 'Anyone who queried 1.1.1.0/24' (1 above)

Remarks

OC will need this functionality to investigate (theoretically posibble) abuse of the feature, for example if someone has accessed single (or multiple) IP (but not the range itself) and leaked the result as a form of range. Without ability to review the log for range itself + each IP in a range, it is going to be more time consuming for OC to determine who accessed the info about IP (and flagged for review).

I think this will probably depend on T146628: Add IP range support to [[Special:Log]], but it's probably better to have some work-around provided by WMF before this becomes a problem.