osmo-gbproxy 1.6.2+dfsg1-3 (armhf binary) in ubuntu hirsute

 The purpose of the Gb proxy is to aggregate the Gb links of multiple
 BSS's and present them in one Gb link to the SGSN.
 .
 The SGSN implements
  - the Gb interface to the BSS's (like the OsmoPCU or an ip.access nanoBTS)
  - the Gp interface with its GTP protocol to one or more Gateway GPRS Support
    Node (GGSN) like OsmoGGSN.
  - the IuPS interface with its RANAP protocol to onre or more RNCs or HNB-GWs
    like OsmoHNBGW
  - the GSUP Interface/Protocol towards OsmoHLR