On Mon, Feb 20, 2017 at 06:28:07PM +0100, Andreas Schultz wrote:
+A specific tunnel is only defined by the destination
entity. Since the
+destination port is constant, only the destination IP and TEID define
+a tunnel. The source IP and Port have no meaning for the tunnel.
Are you absolutely sure about this?
Yes. It took me a while to realize this. The crux is this statement in TS 29.060,
Section 7.3.1:
Also sounds right to me. When the tunnel is established, each side of a GTP
tunnel stores the other side's IP and TEID; port number is constant
(unfortunately, which is one of the ideas/reasons behind gtphub).
~N