Hi Keith, On Thu, Aug 23, 2018 at 12:47:38PM +0200, Keith wrote: > To try to bring this back on topic for the list, I still have the > question of whether the GGSN /could/ in fact provide the correct p-t-p > address?
A GTP tunnel is *not* a point-to-point link, and hence it technically doesn't have a point-to-point address. This is a mismatch between IETF/PPP and 3GPP architecture. The point is that a GGSN is not seen as a router, but merely a tunnel entry point, transporting user packet data such as IP. The actual GGSN implementation may be implemented as a router, but that's then an implementation detail and nothing in the 3GPP design. So I think it would be illogical if the GGSN would advertise a point-to-point address, if it isn't a point-to-point link :) -- - Harald Welte <[email protected]> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)
