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Pierre Kim admin at manateeshome.comHello, I've been experiencing this bug ever since I started experimenting with OpenBSC. At first I thought it as a problem with unstable connection, but it continued to happen even after I connected to the nanoBTS directly through a switch. I used Wireshark to track down the cause and discovered that OpenBSC was responding too late to PING message from the nanoBTS. I am attaching the pcap file of the moment. This happens as soon as 1 hour from the first connection, sometimes it runs okay for 18 hours but I've never seen my nanoBTS running straight for more than 24hrs Please take a look into the log. Any help will be greatly appreciated. Tell me in case if you need more information Regards, Pierre Following is the log from openbsc console. Sat Jun 27 03:24:43 2015 <0004> bsc_init.c:286 bootstrapping RSL for BTS/TRX (0/0) on ARFCN 520 using MCC=450 MNC=9 LAC=1 CID=0 BSIC=63 TSC=7 Sat Jun 27 08:17:39 2015 <001a> ipa.c:246 Cannot send PING message. Reason: Broken pipe Sat Jun 27 08:17:39 2015 <001a> input/ipaccess.c:110 Unexpected return from ipa_ccm_rcvmsg_base (ret=-32) Sat Jun 27 08:17:39 2015 <001a> input/ipaccess.c:236 Sign link vanished, dead socket Sat Jun 27 08:17:39 2015 <001a> input/ipaccess.c:69 Forcing socket shutdown with no signal link set Sat Jun 27 08:20:51 2015 <001a> input/ipa.c:265 accept()ed new link from 192.168.28.31 to port 3002 Sat Jun 27 08:21:08 2015 <001a> input/ipa.c:265 accept()ed new link from 192.168.28.31 to port 3003 Sat Jun 27 08:21:11 2015 <0004> bsc_init.c:286 bootstrapping RSL for BTS/TRX (0/0) on ARFCN 520 using MCC=450 MNC=9 LAC=1 CID=0 BSIC=63 TSC=7 and sometimes without the error from ipa_ccm_rcvmsg_base Sun Jun 28 09:17:40 2015 <001a> input/ipaccess.c:236 Sign link vanished, dead socket Sun Jun 28 09:17:40 2015 <001a> input/ipaccess.c:69 Forcing socket shutdown with no signal link set Sun Jun 28 09:20:39 2015 <001a> input/ipa.c:265 accept()ed new link from 192.168.28.31 to port 3002 Sun Jun 28 09:20:56 2015 <001a> input/ipa.c:265 accept()ed new link from 192.168.28.31 to port 3003 Sun Jun 28 09:20:59 2015 <0004> bsc_init.c:286 bootstrapping RSL for BTS/TRX (0/0) on ARFCN 520 using MCC=450 MNC=9 LAC=1 CID=0 BSIC=63 TSC=7 -------------- next part -------------- A non-text attachment was scrubbed... Name: nanobts.pcap Type: application/octet-stream Size: 5285 bytes Desc: not available URL: <http://lists.osmocom.org/pipermail/openbsc/attachments/20150628/b137c815/attachment.obj> -------------- next part -------------- A non-text attachment was scrubbed... Name: nanobts2.pcap Type: application/octet-stream Size: 4705 bytes Desc: not available URL: <http://lists.osmocom.org/pipermail/openbsc/attachments/20150628/b137c815/attachment-0001.obj>