Questions about communication between virtual machines and host machines

Questions about the communication between virtual machines and host machines: virtual machines are connected through bridging. Other computers on the LAN can use the command ftp 192.168.0.64 to connect to Linux on the virtual machine, however, you cannot use ftp to connect to your local machine. If you change the virtual machine to host-only connection and change the gateway and ip address in Linux to 0 network segments, I can use ftp 192.168.0.64 on the local machine and connect to the local machine normally. However, other computers on the LAN cannot use ftp, because it is not a network segment. Why? Is there any way to enable the ftp service of a virtual machine to be connected by a local machine or a computer on the LAN? Solution: first use the hostonly method to connect, then the service network restart, create a virtual Nic, and then select the bridge method again. And the wife must be around.