Linux and KVM Qemu VM - "Couldn't ARP for host" despite that host and VM are both bridged and in the same subnet

I am using KVM Qemu in Kali linux host, and trying to practice ARP spoofing. In the Kali linux (which is connected to wired ethernet network), I have set up the following configuration (from tutorials I followed) in **/etc/network/interfaces** to configure my KVM VMs to use bridged mode of networking. # This file describes the network interfaces available on your system # and how to activate them. For more information, see interfaces(5). source /etc/network/interfaces.d/* # The loopback network interface auto lo iface lo inet loopback auto br0 iface br0 inet static address 192.168.10.12 broadcast 192.168.10.255 netmask 255.255.255.0 gateway 192.168.10.1 bridge_ports eth0 bridge_stp off bridge_waitport 0 bridge fd 0 To provide further information, following is the result of running ip a in my host machine: └─$ ip a 1: lo: mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host noprefixroute valid_lft forever preferred_lft forever 2: eth0: mtu 1500 qdisc fq_codel master br0 state UP group default qlen 1000 link/ether 10:7b:44:35:45:29 brd ff:ff:ff:ff:ff:ff 3: wlan0: mtu 1500 qdisc noop state DOWN group default qlen 1000 link/ether 56:1b:f4:e4:1e:67 brd ff:ff:ff:ff:ff:ff permaddr 34:f6:4b:ff:c2:01 4: br0: mtu 1500 qdisc noqueue state UP group default qlen 1000 link/ether 10:7b:44:35:45:29 brd ff:ff:ff:ff:ff:ff inet 192.168.10.12/24 brd 192.168.10.255 scope global br0 valid_lft forever preferred_lft forever inet6 fe80::127b:44ff:fe35:4529/64 scope link proto kernel_ll valid_lft forever preferred_lft forever 5: virbr0: mtu 1500 qdisc noqueue state DOWN group default qlen 1000 link/ether 52:54:00:07:00:25 brd ff:ff:ff:ff:ff:ff inet 192.168.122.1/24 brd 192.168.122.255 scope global virbr0 valid_lft forever preferred_lft forever 6: vnet0: mtu 1500 qdisc noqueue master br0 state UNKNOWN group default qlen 1000 link/ether fe:54:00:d6:07:c1 brd ff:ff:ff:ff:ff:ff inet6 fe80::fc54:ff:fed6:7c1/64 scope link proto kernel_ll valid_lft forever preferred_lft forever 7: vnet1: mtu 1500 qdisc noqueue master br0 state UNKNOWN group default qlen 1000 link/ether fe:54:00:f4:dd:55 brd ff:ff:ff:ff:ff:ff inet6 fe80::fc54:ff:fef4:dd55/64 scope link proto kernel_ll valid_lft forever preferred_lft forever Now, when creating my KVM VM, I set it up to use **bridged** networking mode, as can be seen in the following screenshot. Then inside the VM, I gave it the static IP of 192.168.10.301 by doing the following configuration in /etc/network/interfaces file: # This file describes the network interfaces available on your system # and how to activate them. For more information, see interfaces(5). source /etc/network/interfaces.d/* # The loopback network interface auto lo iface lo inet loopback #The primary network interface allow-hotplug enp1s0 iface enp1s0 inet static address 192.168.10.30 netmask 255.255.255.0 gateway 192.168.10.1 Both the host and the VM *can ping each other*. However, when I try to run **arpspoof** by executing **sudo arpspoof -i eth0 -t 192.168.10.30 192.168.10.1** on the host machine, I get **arpspoof: couldn't arp for host 192.168.10.30**. **The question is why and what do I do to fix it?** ____________________________ ***WHAT I TRIED:*** Ofcourse I tried to search it before posting here, and I found a ton of results, including those on this forum, but they were for VMWare or Virtual Box, and the OP would either try it accross different subnets or would not be bridged mode of networking etc. I took care of all those things.