En la maquina cliente
nslookup 10.30.112.220
Server: 192.168.43.1
Address: 192.168.43.1#53
validamos el /etc/resolv.conf
sudo vim /etc/resolv.conf
domain mastermetric.net
search mastermetric.net
nameserver 10.30.112.220
Editamos las interfaces
sudo vim /etc/network/interfaces
auto lo
iface lo inet loopback
auto eth0
allow-hotplug eth0
#iface eth0 inet dhcp
iface eth0 inet static
address 10.30.112.221
netmask 255.255.255.0
network 10.30.112.0
broadcast 10.30.112.255
gateway 10.30.112.1
nameserver 10.30.112.220
reiniciamos las interfaces de red
sudo /etc/init.d/networking restart