This is the command ipip that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
ipip - an IP over IP encapsulation daemon
This is a user-space daemon that supports encapsulation of IP over IP. Modern Linux
kernels provide this ability in the kernel, but consume an interface per encapsulated
link. This can be impractical for virtual networks built up of a large number of
encapsulated links, such as is the case with the amateur radio net-44 network. The ipip
daemon is often a better solution for these environments.
There is very little documentation on the daemon at this time. Look for the README file
in /usr/doc/ipip, and the example config files also in that tree.
Use ipip online using onworks.net services