I upgraded to FS 1.6.12 which I installed in a new Debian 8 instance ran in VirtualBox. After compiling and running all the config scripts I'm not able to establish a SIP call. After some troubleshooting I found that calls are being answered on my eth1 interface (10.0.x.x) but not on my eth0 interface (192.168.99.x). The IP is configured in vars.xml properly and sofia status is showing: freeswitch@freeswitch> sofia status Name Type Data State ================================================================================================= external-ipv6 profile sip:mod_sofia@[::1]:5080 RUNNING (0) external-ipv6 profile sip:mod_sofia@[::1]:5081 RUNNING (0) (TLS) external profile sip:mod_sofia@192.168.99.103:5080 RUNNING (0) external profile sip:mod_sofia@192.168.99.103:5081 RUNNING (0) (TLS) 192.168.99.103 alias internal ALIASED internal-ipv6 profile sip:mod_sofia@[::1]:5060 RUNNING (0) internal-ipv6 profile sip:mod_sofia@[::1]:5061 RUNNING (0) (TLS) internal profile sip:mod_sofia@192.168.99.103:5060 RUNNING (0) internal profile sip:mod_sofia@192.168.99.103:5061 RUNNING (0) (TLS) ================================================================================================= 4 profiles 1 alias Which looks fine. Also the ifconfig of the new Debian instance seems OK, since it's the same that I have on another VM where an older FS version is running. root@osboxes:/usr/local/freeswitch/bin# ifconfig eth0 Link encap:Ethernet HWaddr 08:00:27:3a:f0:c6 inet addr:192.168.99.103 Bcast:192.168.99.255 Mask:255.255.255.0 inet6 addr: fe80::a00:27ff:fe3a:f0c6/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:2482 errors:0 dropped:0 overruns:0 frame:0 TX packets:1034 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:353837 (345.5 KiB) TX bytes:227253 (221.9 KiB) eth1 Link encap:Ethernet HWaddr 08:00:27:f7:f1:24 inet addr:10.0.3.15 Bcast:10.0.3.255 Mask:255.255.255.0 inet6 addr: fe80::a00:27ff:fef7:f124/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:4298 errors:0 dropped:0 overruns:0 frame:0 TX packets:7037 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:437241 (426.9 KiB) TX bytes:829683 (810.2 KiB) lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:65536 Metric:1 RX packets:49100 errors:0 dropped:0 overruns:0 frame:0 TX packets:49100 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:8431576 (8.0 MiB) TX bytes:8431576 (8.0 MiB) I honestly don't know what's going on. Acls are fine, and I don't see any error in the FS log. I traced the network traffic and when trying to call to 192.168.99.103:5060 I get an ICM (Destination unreachable) which doesn't make sense according to what sofia status is showing. Any hint on this?