No need to have a separate runner for ping6 - output format is the same as ping.
Add fping output format support to ping runner.
Add find_ping function to locate a suitable ping executable.
Remove old .ini test specification files.
Use the find_ping function in tests.
Add patch to fping to add timestamps.
Update changelog.
Pre-forking runner implementation.
Parse command to args in constructor of runner.
Update changelog.