On Fri, Nov 06, 2015 at 10:43:38AM +0100, Andreas Schultz wrote: > Thinks get interesting when you look at the Echo requests. For our GGSN > implementation, I decided to only use the IP's from the GSN information > elements.
The way I understand it, Echo is actually defined to be limited to the path, so it is the simplest of them all: reply directly to the IP and port of the sender. Echos don't pass through gtphub, they "rebound". ~Neels
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