F23 Server: unexpected network problem

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I Installed F23 Server with static address but after updating that it
got an automatic one. Why that? I consider that extremely dangerous.
That was verified and happened on different hardware boxes.
Do I miss something? Does anyone else saw that?
This is what I have (eno1 wired, eth1 not connected):


[root@s217 network-scripts]# ls ifcfg-*
ifcfg-eno1  ifcfg-eth1  ifcfg-lo
[root@s217 network-scripts]# cat ifcfg-eno1
HWADDR=00:1E:67:8B:B9:31
TYPE=Ethernet
BOOTPROTO=none
DEFROUTE=yes
IPV4_FAILURE_FATAL=yes
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_FAILURE_FATAL=no
NAME=eno1
UUID=8daf047d-e944-4305-b47f-6f2104edf9a2
ONBOOT=yes
IPADDR=111.222.333.217
PREFIX=27
GATEWAY=111.222.333.193
DNS1=111.222.333.254
DOMAIN=domain.me
IPV6_PEERDNS=yes
IPV6_PEERROUTES=yes
IPV6_PRIVACY=no
[root@s217 network-scripts]# cat ifcfg-eth1
cat: cat: No such file or directory
HWADDR=00:1E:67:8B:B9:30
TYPE=Ethernet
BOOTPROTO=dhcp
DEFROUTE=yes
PEERDNS=yes
PEERROUTES=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_PEERDNS=yes
IPV6_PEERROUTES=yes
IPV6_FAILURE_FATAL=no
NAME=eth1
UUID=0d9c850a-1545-481c-897f-84d4475e0377
ONBOOT=yes
[root@s217 network-scripts]# ip route
default via 172.18.0.1 dev eno1  proto static  metric 100 
172.18.0.0/16 dev eno1  proto kernel  scope link  src
172.18.172.146  metric 100 
192.168.122.0/24 dev virbr0  proto kernel  scope link  src
192.168.122.1 
111.222.333.193 via 172.18.0.1 dev eno1  proto dhcp  metric 100 
[root@s217 network-scripts]# ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
group default 
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: eth0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc fq_codel
state DOWN group default qlen 1000
    link/ether 00:1e:67:8b:b9:31 brd ff:ff:ff:ff:ff:ff
3: eno1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel
state UP group default qlen 1000
    link/ether 00:1e:67:8b:b9:30 brd ff:ff:ff:ff:ff:ff
    inet 172.18.172.146/16 brd 172.18.255.255 scope global dynamic eno1
       valid_lft 949sec preferred_lft 949sec
    inet6 fe80::21e:67ff:fe8b:b930/64 scope link 
       valid_lft forever preferred_lft forever
4: virbr0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue
state DOWN group default 
    link/ether 52:54:00:62:c8:4a brd ff:ff:ff:ff:ff:ff
    inet 192.168.122.1/24 brd 192.168.122.255 scope global virbr0
       valid_lft forever preferred_lft forever
5: virbr0-nic: <BROADCAST,MULTICAST> mtu 1500 qdisc fq_codel master
virbr0 state DOWN group default qlen 500
    link/ether 52:54:00:62:c8:4a brd ff:ff:ff:ff:ff:ff
[root@s217 network-scripts]#
 
C.S.

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