Freeswitch crash when call from DID to DID. Latest version astpp.
2016-08-26 01:54:18.386697 [INFO] switch_core.c:2425
FreeSWITCH Version 1.6.9+git~20160613T181044Z~d574870720~64bit (git d574870 2016-06-13 18:10:44Z 64bit)

FreeSWITCH Started
Max Sessions [1000]
Session Rate [30]
SQL [Enabled]
freeswitch@host1> 2016-08-26 01:54:22.030061 [WARNING] sofia_reg.c:1787 SIP auth challenge (REGISTER) on sofia profile 'default' for [3333@192.168.8.28] from ip 192.168.8.17
2016-08-26 01:54:33.148649 [WARNING] sofia_reg.c:1787 SIP auth challenge (REGISTER) on sofia profile 'default' for [2222@192.168.8.28] from ip 192.168.8.15
2016-08-26 01:54:33.168551 [CONSOLE] sofia_presence.c:1618 Event Thread Started
2016-08-26 01:54:33.713819 [WARNING] sofia_reg.c:1787 SIP auth challenge (REGISTER) on sofia profile 'default' for [2222@192.168.8.28] from ip 192.168.8.15
2016-08-26 01:55:04.808479 [NOTICE] switch_channel.c:1104 New Channel sofia/default/3333@192.168.8.28 [90bc3a67-b6f1-4220-992b-b055bbdfc2c3]
2016-08-26 01:55:04.808479 [WARNING] sofia_reg.c:1787 SIP auth challenge (INVITE) on sofia profile 'default' for [2222@192.168.8.28] from ip 192.168.8.17
2016-08-26 01:55:04.831320 [INFO] mod_dialplan_xml.c:637 Processing PhonerLite <3333>->2222 in context default
Floating point exception

freeswitch compiled with --enable-zrtp option