[ovs-discuss] Not able to add second tunneling port

[Ben Pfaff]

On Mon, Nov 28, 2016 at 04:52:09PM +0100, Ashish Kurian wrote:
> I have developed OVS to support GTP-U tunneling. I am able to setup one GTP
> tunneling port, but if I try to add a second port to the switch it gives me
> an error as shown below.
> 
> sudo ovs-vsctl add-br br1
> ashish at ashish-VirtualBox:~$ sudo ovs-vsctl add-port br1 gtp0 -- set
> interface gtp0 type=gtp options:remote_ip=flow options:key=flow
> ashish at ashish-VirtualBox:~$
> ashish at ashish-VirtualBox:~$ sudo ovs-vsctl add-port br1 gtp1 -- set
> interface gtp1 type=gtp options:remote_ip=flow options:key=flow
> ovs-vsctl: Error detected while setting up 'gtp1'.  See ovs-vswitchd log
> for details.

You can't have two identical tunnels.