Hostname:    host-o-rama-bama.com
Static IP:   10.20.30.40
Gateway:     10.20.30.1
Netmask:     255.255.255.0
DNS server:  100.110.120.130
DNS server:  100.110.120.140

General
* Automatically connect to this network when it is available: Yes
* All users may connect to this network: Yes
Ethernet
* Device: enp2s0f1
* Wake on LAN: Default
802.1x security
(None)
DCB
(None)
IPV4 Settings
* Method: Manual
* Address:  10.20.30.40
* Netmask:  255.255.255.0
* Gateway:  10.20.30.1
* DNS Servers: 100.110.120.130,100.110.120.140
* Search Domains: host-o-rama-bama.com
IPV6 Settings
* Method: Ignore

# ifconfig
enp2s0f1  Link encap:Ethernet  HWaddr 80:fa:5b:4c:02:07
          inet addr:10.20.30.40  Bcast:10.20.30.255  Mask:255.255.255.0
          inet6 addr: fe80::82fa:5bff:fe4c:207/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:63252 errors:0 dropped:0 overruns:0 frame:0
          TX packets:40966 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:53814860 (53.8 MB)  TX bytes:5441842 (5.4 MB)

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:7029 errors:0 dropped:0 overruns:0 frame:0
          TX packets:7029 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:650606 (650.6 KB)  TX bytes:650606 (650.6 KB)

domain host-o-rama-bama.com
search host-o-rama-bama.com
nameserver 100.110.120.130
nameserver 100.110.120.140

# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback

auto enp2s0f1
iface enp2s0f1 inet static
address 10.20.30.40
netmask 255.255.255.0
gateway 10.20.30.1
dns-nameserver 100.110.120.130
dns-nameserver 100.110.120.140
dns-search host-o-rama-bama.com

# ifdown enp2s0f1
# ifup enp2s0f1

# ifdown -a
# ifup -a

# /etc/init.d/network-manager stop
# /etc/init.d/network-manager start

# service networking restart