At least with udev-106-r5, the "%c" that occurs in the udev-rules is replaced by the output of the last command run, and that is not the command from the rule before, as udev seems to reorder rules. As udev-106-r5 also supplies rules for normal device-mapper devices the naming rule can be skipped, and only the kpartx rules need to stay. Attached is a suggested rules file.
Created attachment 113889 [details] 65-multipath.rules For the naming I think the file-number should be between 65 and 94, as env-variable with device-mapper name is set in 64-device-mapper.rules. We do not yet have a clear numbering concept, but I suggest either 65 or 80.
Created attachment 119882 [details] 65-multipath.rules Updated rules file, to correspond to variable name changed in udev-111. If there is no reaction, I commit this in some days.
Commited after "some" days ;) to multipath-tools-0.4.7-r2
