/sbin/routef is a small script in the iproute2-package which flushes the routing table by simply executing "ip -4 ro flush scope global type unicast". This could be a risky operation and so it is not that good that the script does not offer any help. Also the user uses "--help", it flushes the routing table. My proposal to make it more convenient is attached.
*** This bug has been marked as a duplicate of 139853 ***
.
I'm sorry for the duplicate. Bugzilla runs quite strange currently.