Check VM's IP address from the host

In this post, we talk about how to check the IP address of VM from the host machine.

Guests using NAT

There is a built-in dhcp server in qemu/virtio. And one can check the guests’ IP address from the host machine by running

virsh net-dhcp-leases <network_name>

where the <network_name> is the name of your virtio network, which can be checked by

virsh net-list -all

Guests using bridged network

One can use the tool dhcpdump.

sudo apt install dhcpdump
sudo dhcpdump -i br0

The previous part of IP, and the GIADDR is the ip address of the DHCP server. The latter part of IP, and the YIADDR is the ip address of the guest’s ip address.