icmpinfo(1) on Linux
The text 2763cb7850bc, as Debian 2.1 (Slink), Debian 2.0 (Hamm) shipped it. The page shows this text now.
interpret ICMP messages
Flags it lists
-
-k -
-l -
-n -
-p -
-s -
-v -
-vv -
-vvv