I have the ip a command results the following: [root@localhost ~(keystone_admin)]# ip a 1: lo: mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 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: eno16777736: mtu 1500 qdisc fq_codel master ovs-system state UP group default qlen 1000 link/ether 00:0c:29:37:19:1f brd ff:ff:ff:ff:ff:ff inet6 fe80::20c:29ff:fe37:191f/64 scope link valid_lft forever preferred_lft forever 3: ovs-system: mtu 1500 qdisc noop state DOWN group default qlen 1000 link/ether 76:43:64:bc:be:22 brd ff:ff:ff:ff:ff:ff 4: br-int: mtu 1500 qdisc noop state DOWN group default qlen 1000 link/ether 9a:ed:b6:78:0c:48 brd ff:ff:ff:ff:ff:ff 5: br-tun: mtu 1500 qdisc noop state DOWN group default qlen 1000 link/ether 56:40:b4:95:4f:4c brd ff:ff:ff:ff:ff:ff 7: virbr0: mtu 1500 qdisc noqueue state DOWN group default qlen 1000 link/ether 52:54:00:32:ff:42 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 8: virbr0-nic: mtu 1500 qdisc fq_codel master virbr0 state DOWN group default qlen 1000 link/ether 52:54:00:32:ff:42 brd ff:ff:ff:ff:ff:ff 65: br-ex: mtu 1500 qdisc noqueue state UNKNOWN group default qlen 1000 link/ether 00:0c:29:37:19:1f brd ff:ff:ff:ff:ff:ff inet 192.168.43.110/24 brd 192.168.43.255 scope global br-ex valid_lft forever preferred_lft forever inet6 fe80::6c25:72ff:fe0e:974f/64 scope link valid_lft forever preferred_lft forever [root@localhost ~(keystone_admin)]# as you can see br-ex is state UNKNOWN I can ping from inside VM and ping from outside VM, before i was not able to ping outside VM because windows 10 firewall turned on for some reason,windows update maybe did it ... turned off the windows firewall, shared the NIC card and still the same problem ... [root@localhost network-scripts]# systemctl status network -l ● network.service - LSB: Bring up/down networking Loaded: loaded (/etc/rc.d/init.d/network; bad; vendor preset: disabled) Active: active (exited) since Sat 2019-01-19 16:44:27 EST; 3h 39min ago Docs: man:systemd-sysv-generator(8) Tasks: 0 Jan 19 16:44:08 localhost systemd[1]: Starting LSB: Bring up/down networking... Jan 19 16:44:14 localhost network[38911]: Bringing up loopback interface: [ OK ] Jan 19 16:44:14 localhost ovs-vsctl[39058]: ovs|00001|vsctl|INFO|Called as ovs-vsctl -t 10 -- --may-exist add-br br-ex Jan 19 16:44:25 localhost network[38911]: Bringing up interface br-ex: [ OK ] Jan 19 16:44:26 localhost ovs-vsctl[39250]: ovs|00001|vsctl|INFO|Called as ovs-vsctl -t 10 -- --if-exists del-port br-ex eno16777736 -- add-port br-ex eno16777736 Jan 19 16:44:26 localhost network[38911]: Bringing up interface eno16777736: [ OK ] Jan 19 16:44:27 localhost systemd[1]: Started LSB: Bring up/down networking. [root@localhost network-scripts]# [root@localhost ~(keystone_admin)]# cat /etc/sysconfig/network-scripts/ifcfg-br-ex TYPE=OVSBridge DEVICE=br-ex DEVICETYPE=ovs DEFROUTE=yes IPV4_FAILURE_FATAL=no NAME=br-ex ONBOOT=yes IPADDR=192.168.43.110 PREFIX=24 GATEWAY=192.168.43.1 DNS=192.168.43.1 BOOTPROTO=static [root@localhost ~(keystone_admin)]# [root@localhost ~(keystone_admin)]# cat /etc/sysconfig/network-scripts/ifcfg-eno16777736 HWADDR=00:0C:29:37:19:1F TYPE=Ethernet TYPE=OVSPort DEVICE=eno16777736 DEVICETYPE=ovs UUID=c0addf73-98fe-464c-804a-b40110fd6157 ONBOOT=yes OVS_BRIDGE=br-ex BOOTPROTO=none ONBOOT=yes PROMISC=yes NM_CONTROLLED=no DEFROUTE=yes NAME=eno16777736 PROXY_METHOD=none BROWSER_ONLY=no PEERDNS=yes PEERROUTES=yes NM_CONTROLLED=no [root@localhost ~(keystone_admin)]# I removed TYPE=Ethernet and NAME=eno16777736 is there anything else to remove