Suas interfaces parecem confusas. Por favor, dê uma olhada aqui (eu citei o exemplo de configuração do link a seguir e editei de acordo com sua configuração): link
Example
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Standalone bridge:
==> ifcfg-ovsbridge0 <==
DEVICE=br100
ONBOOT=yes
DEVICETYPE=ovs
TYPE=OVSBridge
BOOTPROTO=static
IPADDR=A.B.C.D
NETMASK=X.Y.Z.0
HOTPLUG=no
Enable DHCP on the bridge:
* Needs OVSBOOTPROTO instead of BOOTPROTO.
* All the interfaces that can reach the DHCP server
as a space separated list in OVSDHCPINTERFACES.
DEVICE=br100
ONBOOT=yes
DEVICETYPE=ovs
TYPE=OVSBridge
OVSBOOTPROTO="dhcp"
OVSDHCPINTERFACES="eth0"
HOTPLUG=no
Adding physical eth0 to br100 described above:
==> ifcfg-eth0 <==
DEVICE=eth0
ONBOOT=yes
DEVICETYPE=ovs
TYPE=OVSPort
OVS_BRIDGE=br100
BOOTPROTO=none
HOTPLUG=no
Tagged VLAN interface on top of br100:
==> ifcfg-eth0.200 <==
DEVICE=eth0.200
ONBOOT=yes
DEVICETYPE=ovs
TYPE=OVSIntPort
BOOTPROTO=static
IPADDR=A.B.C.D
NETMASK=X.Y.Z.0
OVS_BRIDGE=br100
OVS_OPTIONS="tag=200"
OVS_EXTRA="set Interface $DEVICE external-ids:iface-id=$(hostname -s)-$DEVICE-vif"
HOTPLUG=no