Changed the epc.conf to have some instructions how to configure wireshark to decode the S1AP packets from the epc.pcap file.

srsepc/epc.conf.example

@@ -51,7 +51,10 @@ sgi_if_addr    = 172.16.0.1
 ####################################################################
 # PCAP configuration
 #
-# Enable PCAP tracing of S1AP packets
+# Packets are captured to file in the compact format decoded by 
+# the Wireshark s1ap dissector and with DLT 150. 
+# To use the dissector, edit the preferences for DLT_USER to 
+# add an entry with DLT=150, Payload Protocol=s1ap.
 #
 # enable:   Enable or disable the PCAP.
 # filename: File name where to save the PCAP.

srsepc/src/mme/s1ap.cc

@@ -104,8 +104,8 @@ s1ap::init(s1ap_args_t s1ap_args, srslte::log_filter *s1ap_log, hss_interface_s1
   if(m_pcap_enable)
   {
     m_pcap.open(s1ap_args.pcap_filename.c_str());
-    m_s1ap_log->info("S1AP Initialized\n");
   }
+  m_s1ap_log->info("S1AP Initialized\n");
   return 0;
 }