IPIP tunnel peer ipv4 address

[Radu Rendec <radu rendec mindbit ro>]

I'm trying to setup an IPIP tunnel using nmcli. I can create the tunnel
using, e.g.:

nmcli con add type ip-tunnel mode ipip ifname tun0 remote 10.0.4.1 local 10.0.8.1

And then I can assign an ipv4 address using:

nmcli con mod ip-tunnel-tun0 ipv4.address 192.168.9.1

However, I'm not able to set the peer ipv4 address (the "inner" address
of the remote end of the tunnel). What I'm looking for is the NM
equivalent of this:

ip addr add 192.168.9.1 peer 192.168.9.2 dev tun0

What is the NM way to configure something similar to the above?

Thanks!