Reference

ptunnel-ng(8) on Linux

The text 384be76d99de, as Debian 13 (Trixie), Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster) shipped it. The page shows this text now.

tunnel TCP connections over ICMP echo request/reply packets.

ptunnel-ng(8) on Linux now