without flags, the main fping binary is v4/v6 dual stack, use -4 / -6 to force one particular af. a v6-only fping6 is installed to provide support for dependent ports, using the method from https://github.com/schweikert/fping/pull/139
without flags, the main fping binary is v4/v6 dual stack, use -4 / -6 to force one particular af. a v6-only fping6 is installed to provide support for dependent ports, using the method from https://github.com/schweikert/fping/pull/139