16 Nov
2015
16 Nov
'15
3:58 p.m.
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