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I'm trying to establish parallel tunnels between the same two routers, each of which route traffic from slightly different subnets. I can always set up the first tunnel without a problem, however when I get to the second tunnel I get the following error:

SIOCSIFADDR: No such device
TUNNEL6: ERROR while getting interface flags: No such device

The problem, I think, manifests itself when I run the following commands:

ip tunnel add Tunnel5 mode gre local remote # works
# some ipsec configuration stuff
ip tunnel add Tunnel6 mode gre local remote # doesn't work

I imagine what's going on is that I'm trying to create two tunnels defined by the same local and remote addresses but with different names.

I realize the correct way to do this would be to create one tunnel which routes all of the traffic behind the two gateways that I want to route, however for arguments sake, is creating two parallel tunnels like this possible (specifically using Linux/Quagga routers)?

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