Bridge interface across VMs to allow lan VM internet access


Travis Liew

Is it possible to bridge interfaces across virtual machines?

I have three virtual machines with the following settings:

VM1
eth0:    public ip
eth0:0   private lan ip 172.22.xx.x1

VM2
eth0     no ip
eth0:0   private lan ip 172.22.xx.x2

VM3
eth0     no ip
eth0:0   private lan ip 172.22.xx.x3

And I want VM2/VM3to be able to access the internet via VM1. Any chance I can bridge VM2/VM3 eth0:0to VM1 eth0achieve this?

thanks.

Edit - I am running CentOS 7 on my VM

Heavy

You can set up VM1 as a Linux router, enable Ipv4 forwarding and set up NAT MASQUERADE. Then you set the default route on VM2/3 to VM1 and don't forget the DNS server.

Try the following commands:

ip route add default via 172.22.xx.x1 dev eth0:0

refer to

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