This bug exists to track mirror --checksum status. To test, fetch this URL per mirror, with a time gap between it. The value SHOULD be regularly updating. If it sticks, then the mirror or something upstream of it is missing --checksum. rsync://${MIRROR}/gentoo-portage/metadata/.checksum-test-marker
robbat2: Did I get you correctly the other day that this is obsolete?
Sadly yes, as many mirrors can't use checksum.