$ cat /etc/network/interfaces
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet static
address 10.183.23.56
netmask 255.255.254.0
broadcast 10.183.22.255
gateway 10.183.22.1
network 10.183.22.0
slaves eth0
bond_mode active-backup
bond_miimon 100
bond_downdelay 200
bond_updelay 200
auto eth0:0
iface eth0:0 inet static
address 10.183.23.69
netmask 255.255.254.0
network 10.183.22.0
broadcast 10.183.22.255
$ ip route show
default via 10.183.22.1 dev eth0
10.183.22.0/23 dev eth0 proto kernel scope link src 10.183.23.69
172.17.42.0/30 dev docker0 proto kernel scope link src 172.17.42.1