TCP retransmissions in router_raw.pcap

[olegbck]

VMs share the same network interface. For example, if we run 3 VMs: VM1, VM2 and router, then we see network interaction VM1<->VM2 twice: VM1<->router and router<->VM2.

This can be seen as TCP Retransmission and some users find it confusing:

To make the pcap look cleaner, let's either filter the retransmissions out from the pcap or change the infrastructure, so that VMs are physically detached from each other.