This is my interfaces file and Host and VM can access IPv6 Internet, change it to static if you want since I use DHCPv6
auto lo
iface lo inet loopback
iface enx0 inet manual
auto vmbr0
iface vmbr0 inet dhcp
gateway 10.88.88.1
bridge-ports enx0
bridge-stp off
bridge-fd 0
iface...