The documentation is clear, https://developer.apple.com/documentation/vmnet "Packets sent from a different IPv4 address are dropped by the system." But I wanted to have some proxmox nodes (debian with lxc containers) to test and learn high-availability clustering with it Also it could be cool to use some containers for "micro-services" web architecture I'm using https://github.com/gyf304/vmcli to create the virtual machines (both x86/arm 64bits are usable), but due to this "single IP" limitation, I can't make a virtual hosts communicate Is there any option / configuration on bridge100 interface to bypass this limitation ?