From what I can see each outgoing echo request is looped four times. Probably this caused by loopback packet indication when outgoing packet sent from one protocol is indicated back to all installed protocols (without this functionality wireshark would not be able to collect outgoing packets). And in your test loopback packet is routed back into the network (note the decreased ttl). Difficult to say who has routed the packet as WinpkFilter does not implement routing but WinpkFilter repackages network packets and one of the installed network components may fail to recognize the packet it just sent out and rerouted it. What network components do you have installed? Here I mean protocols drivers like winpcap and various virtual machine bridge and NAT components? Details in the network configuration also may help.