HI,
On my Virt Manager (VM on CentOS-7) i install centos and that OS having 3 network interface 2 interface of that OS is connected on Default NET and 3rd one I want to connect to my physical interface. It's shows connected but i can't ping gateway.
I also try by creating bridge on physical machine but that also not work.
I assume you're talking about KVM and its UI virt-manager?
Manually creating a bridge on the physical machine sounds about right. Just create a new bridge and add your physical interface (i.e., eth0) to it. Ihe physical interface should not be configured with an IP address. Instead, the bridge interface will hold the networking configuration your physical interface previously had.
As an example:
brctl addbr br0
ifconfig eth0 0.0.0.0
brctl addif br0 eth0
ifconfig br0 192.168.1.120 netmask 255.255.255.0 up
route add -net 192.168.1.0 netmask 255.255.255.0 br0
route add default gw 192.168.1.1 br0
Your physical network should still function after this steps. In virt-manager, you should now be able to select the host-interface br0 when configuring a VMs network.
I assume you're talking about KVM and its UI virt-manager?
Manually creating a bridge on the physical machine sounds about right. Just create a new bridge and add your physical interface (i.e., eth0) to it. Ihe physical interface should not be configured with an IP address. Instead, the bridge interface will hold the networking configuration your physical interface previously had.
As an example:
brctl addbr br0
ifconfig eth0 0.0.0.0
brctl addif br0 eth0
ifconfig br0 192.168.1.120 netmask 255.255.255.0 up
route add -net 192.168.1.0 netmask 255.255.255.0 br0
route add default gw 192.168.1.1 br0
Your physical network should still function after this steps. In virt-manager, you should now be able to select the host-interface br0 when configuring a VMs network.
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