root@nfsnis-prod-rsord:/srv/salt# salt '*' state.highstate
stopr-test.*****.com:
----------
          ID: vim
    Function: pkg.installed
      Result: True
     Comment: Package vim is already installed
     Changes:
----------
          ID: interfaces
    Function: file.replace
        Name: /etc/network/interfaces
      Result: True
     Comment: Changes were made
     Changes:
              ----------
              diff:
                  ---
                  +++
                  @@ -5,7 +5,7 @@
                   iface eth0 inet static
                   address 10.208.134.14
                   netmask 255.255.192.0
                  -dns-nameservers: 10.125.125.2: 10.125.125.2 69.20.0.164 69.20.0.196
                  +dns-nameservers: 10.125.125.210.125.125.2: 10.125.125.2 69.20.0.164 69.20.0.196
                   up route add -net 10.176.0.0 netmask 255.240.0.0 gw 10.208.128.1
                   down route del -net 10.176.0.0 netmask 255.240.0.0 gw 10.208.128.1
                   up route add -net 10.208.0.0 netmask 255.240.0.0 gw 10.208.128.1
                  @@ -15,5 +15,5 @@
                   iface eth1 inet static
                   address 10.125.125.16
                   netmask 255.255.255.0
                  -dns-nameservers: 10.125.125.2: 10.125.125.2 10.125.125.2
                  +dns-nameservers: 10.125.125.210.125.125.2: 10.125.125.2 10.125.125.2
                   gateway 10.125.125.3


Summary
------------
Succeeded: 2
Failed:    0
------------
Total:     2

----

cat interfaces.sls
interfaces:
 file.replace:
  - name: /etc/network/interfaces
  - pattern: "dns-nameservers: *"
  - repl: "dns-nameservers: 10.125.125.2"

--

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: 10.125.125.210.125.125.2: 10.125.125.2 69.20.0.164 69.20.0.196
up route add -net 10.176.0.0 netmask 255.240.0.0 gw 10.208.128.1
down route del -net 10.176.0.0 netmask 255.240.0.0 gw 10.208.128.1
up route add -net 10.208.0.0 netmask 255.240.0.0 gw 10.208.128.1
down route del -net 10.208.0.0 netmask 255.240.0.0 gw 10.208.128.1

auto eth1
iface eth1 inet static
address 10.125.125.16
netmask 255.255.255.0
dns-nameservers: 10.125.125.210.125.125.2: 10.125.125.2 10.125.125.2
gateway 10.125.125.3