TCP-connection related issue.
We currently investigating the TCP-connection drops issue between two peers. While dumping on router we have ~120k packets per conversation (dumping about one minute). Dump on host (tcpdump) shows ~140k packets (filtering the TCP-flow in Wireshark). We don't observe any drops or congestion on interfaces of switches between two hosts. Where is the rest of packets? The connection itself related to communication of specific protocols of mobile operators, but based on TCP.