STP and SGSN communication

Hi everyone, I'm currently struggling with getting the NITB example (https://osmocom.org/projects/cellular-infrastructure/wiki/Osmocom_Network_I…) running. My problem looks as follows: I do see messages reaching the HNBGW component but whenever the HNBGW tries to reach the SGSN component I get the following error: DLSS7 <000c> osmo_ss7_hmrt.c:278 m3ua_hmdc_rx_from_l2(): dpc=188=0.23.4 not local, message is for routing DLSS7 <000c> osmo_ss7_hmrt.c:258 MTP-TRANSFER.req for DPC 188: no route! Using the VTY interface I can see that only HNBGW and MSC annouced their code points towards STP. : as-rkm-1     AS_ACTIVE    1          0.23.5 as-rkm-2     AS_ACTIVE    2          0.23.1 However, I can not see the code point 0.23.4 (SGSN). In addition, I'm also not sure if the routes are valid as they are: 7.255.7                    0 as-rkm-1            ?       ? ? 7.255.7                    0 as-rkm-2            ?       ? ? Here are my configurations (without the logging parts): ################### osmo-hnbgw.cfg ################### cs7 instance 0  # HNBGW's local point code  point-code 0.23.5  # Address book entries, used below  sccp-address my_msc   point-code 0.23.1  sccp-address my_sgsn   point-code 0.23.4 hnbgw  iucs   remote-addr my_msc  iups   remote-addr my_sgsn  iuh   local-ip 10.1.1.1   hnbap-allow-tmsi 1 ################### osmo-sgsn.cfg ################### sgsn  gtp local-ip 10.1.1.1  ggsn 0 remote-ip 10.1.1.2  ggsn 0 gtp-version 1  !auth-policy accept-all  auth-policy remote  gsup remote-ip 127.0.0.1  gsup remote-port 4222 ns  timer tns-block 3  timer tns-block-retries 3  timer tns-reset 3  timer tns-reset-retries 3  timer tns-test 30  timer tns-alive 3  timer tns-alive-retries 10  encapsulation udp local-ip 127.0.0.1  encapsulation udp local-port 23000  encapsulation framerelay-gre enabled 0 bssgp ################### osmo-hnbgw.cfg ################### network  network country code 901  mobile network code 98  short name OsmoMSC  long name OsmoMSC  encryption a5 0  rrlp mode none  mm info 1 msc  mgw remote-ip 10.1.1.2  mgw endpoint-range 1 32 ################### osmo-stp.cfg ################### cs7 instance 0  xua rkm routing-key-allocation dynamic-permitted  listen m3ua 2905   accept-asp-connections dynamic-permitted I hope someone can spot my mistake! Best regards, Lars