nanobts and sgsn

hi, after upgrading to latest openbsc/master, i experienced the following problem with sgsn: <0013> gprs_llc.c:506 LLC SAPI=1 C FCS=0x7b8d5fCMD=UI DATA <0013> gprs_llc.c:142 TLLI 0x990ea532 is foreign, converting to local TLLI 0xd90ea532 <0013> gprs_llc.c:789 LLC RX: unknown TLLI 0x990ea532, creating LLME on the fly <0013> gprs_llc.c:142 TLLI 0x990ea532 is foreign, converting to local TLLI 0xd90ea532 <0013> gprs_llc.c:372 LLC TX: unknown TLLI 0x990ea532, creating LLME on the fly <0012> gprs_bssgp.c:503 BSSGP BVCI=0 TLLI=990ea532 Rx LLC DISCARDED <0012> gprs_bssgp.c:376 BSSGP TLLI=0x990ea532 Rx UPLINK-UNITDATA <0013> gprs_llc.c:506 LLC SAPI=1 C FCS=0x30b960CMD=UI DATA <0013> gprs_llc.c:142 TLLI 0x990ea532 is foreign, converting to local TLLI 0xd90ea532 <0013> gprs_llc.c:789 LLC RX: unknown TLLI 0x990ea532, creating LLME on the fly <0013> gprs_llc.c:142 TLLI 0x990ea532 is foreign, converting to local TLLI 0xd90ea532 <0013> gprs_llc.c:372 LLC TX: unknown TLLI 0x990ea532, creating LLME on the fly <0012> gprs_bssgp.c:503 BSSGP BVCI=0 TLLI=990ea532 Rx LLC DISCARDED <0012> gprs_bssgp.c:376 BSSGP TLLI=0x990ea532 Rx UPLINK-UNITDATA <0013> gprs_llc.c:506 LLC SAPI=1 C FCS=0x280569CMD=UI DATA <0013> gprs_llc.c:142 TLLI 0x990ea532 is foreign, converting to local TLLI 0xd90ea532 <0013> gprs_llc.c:789 LLC RX: unknown TLLI 0x990ea532, creating LLME on the fly <0013> gprs_llc.c:142 TLLI 0x990ea532 is foreign, converting to local TLLI 0xd90ea532 <0013> gprs_llc.c:372 LLC TX: unknown TLLI 0x990ea532, creating LLME on the fly <0012> gprs_bssgp.c:503 BSSGP BVCI=0 TLLI=990ea532 Rx LLC DISCARDED the auth-policy is configured to "accept-all". any idea how to do deeper debugging? regards, andreass