gbproxy: Redundancy within proxy pair
A gbproxy pair features a redundant connection between the BSS and SGSN side.
Should either of the two proxies within a pair be inoperational, the NS-VCs over the E1 circuits on the BSS side of that one proxy are getting BLOCKED and traffic between BSS and SGSN transparently continues to flow via the other proxy of the pair.
pushed a patch to support the advertisement of foreing IP endpoints in IP-SNS. It's untested and just in gerrit for soliciting some early review at https://gerrit.osmocom.org/c/libosmocore/+/23521
I'm planning related TTCN3 tests, once I've introduced proper "full mesh NS-VCs on IP-SNS" in TTCN3.