Setup Host-only Adapter.
By default, the host only adapter have a DHCP which assigned ip between 192.168.56.101 to 192.168.56.254. You can limit the ip range by configuring the DHCP via VirtualBox -> File -> Host Network Manager.
You can check your assigned IP via ifconfig -a, where enp0s8 is Host-only Adapter.
enp0s3: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 10.0.2.15 netmask 255.255.255.0 broadcast 10.0.2.255
inet6 fe80::6985:240e:c74:951d prefixlen 64 scopeid 0x20<link>
ether 08:00:27:4f:1c:84 txqueuelen 1000 (Ethernet)
RX packets 39 bytes 5879 (5.8 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 64 bytes 9487 (9.4 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
enp0s8: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.56.101 netmask 255.255.255.0 broadcast 192.168.56.255
inet6 fe80::506e:b210:fa8c:2a3b prefixlen 64 scopeid 0x20<link>
ether 08:00:27:d7:b0:01 txqueuelen 1000 (Ethernet)
RX packets 10 bytes 1785 (1.7 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 29 bytes 4205 (4.2 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 35 bytes 3839 (3.8 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 35 bytes 3839 (3.8 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0Enable Static IP
sudo nano /etc/network/interfaces# Host-only
auto enp0s8
iface enp0s8 inet static
address 192.168.56.101
netmask 255.255.255.0Install sudo apt-get install ifupdown to test if the configuration is successful.
Restart the network interface
sudo ifdown enp0s8sudo ifup enp0s8NOTE: You can test via service networking status or systemctl restart NetworkManager or reboot the client.