I just installed Kali linux on VM. I learned some things and start working with ettercap and wireshark. When I first time scaned for hosts I found online that I need to reinstall ettercap, so I did according to some article on stack overflow or github and I am sure it is not the problem. When i start search i click scan for hosts and get 3 results(all of them are Virtual hosts I think), I connected every combination and tried sniffing in wireshark it loaded some things but did not load i do not know searches I did on every possible device connected to network, it loaded some ARP protocole informations but nothing useful, and it loaded that every like 3-4 minutes. I am sure I did nothing wrong in setting up ettercap and wireshark. Can it be something like firewall or DNS? Can someone help me to solve this?