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Harald Welte laforge at osmocom.orgHi David, On Tue, Apr 07, 2020 at 06:18:23PM +0200, Harald Welte wrote: > > On Mon, Apr 06, 2020 at 04:29:21PM -0400, david at ispsupplies.com wrote: > > Does anyone have any experience with a bridged APN on Open5GS? > > As far as I know, 3GPP didn't really introduce "Ethernet" type PDN contexts > until very recent releases. For a long time, IPv4, IPv6 and IPv4v6 were the > only available options. I just checked: Etehernet type PDN connections are only supported in 5G, but not in 4G/EPC. Even Releae 15 doesn't mention it at all. So whatever some vendors may be offering, I would bet it is not really any actual Ethernet bridging. It may be more something like proxy-ARP on the PGW side, but still only passing IP over the 4G network. The big question is: What is it used for, and what are the requirements of that use case? A real Ethernet bridge would be transparent regarding the MAC addresses on both sides. And that's what I'm stating is not possible over 4G as per 3GPP specs. -- - Harald Welte <laforge at osmocom.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)