cat /etc/network/interfaces
# 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
auto enp2s0
#iface enp2s0 inet dhcp
iface enp2s0 inet manual

#auto eth0
#iface eth0 inet manual

auto br0
iface br0 inet static
    #bridge_ports eth0
    bridge_ports enp2s0
    address 192.168.99.3
    netmask 255.255.255.0
    gateway 192.168.99.4
    dns-nameservers 192.168.99.4
    dns-search async.com.br internal local
    bridge_stp off
    bridge_fd 0
    bridge_maxwait 0