cat /etc/network/interfaces

auto lo
iface lo inet loopback

auto eth0
iface eth0 inet static
address 10.208.134.14
netmask 255.255.192.0
dns-nameservers 69.20.0.164 69.20.0.196
up route add -net 10.176.0.0 netmask 255.240.0.0 gw 10.209.64.1
down route del -net 10.176.0.0 netmask 255.240.0.0 gw 10.209.64.1
up route add -net 10.208.0.0 netmask 255.240.0.0 gw 10.209.64.1
down route del -net 10.208.0.0 netmask 255.240.0.0 gw 10.209.64.1

auto eth1
iface eth1 inet static
address 10.125.125.16
netmask 255.255.255.0
dns-nameservers 8.8.8.8
gateway 10.125.125.3

--

cat interfaces.sls

eth1:
  network.managed:
    - enabled: True
    - type: eth
    - dns:
      - 10.125.125.2