Thanks for your reply Joel. Here's the output, I see that the FS process is binding 10.X interface with port 5060, but I don't know why that doesn't match what sofia status is showing:

root@osboxes:~# iptables -L -n

Chain INPUT (policy ACCEPT)

target prot opt source destination

Chain FORWARD (policy ACCEPT)

target prot opt source destination

Chain OUTPUT (policy ACCEPT)

target prot opt source destination

root@osboxes:~# netstat -putan | grep -i freeswitch

tcp 0 0 10.0.3.15:5080 0.0.0.0:* LISTEN 3519/freeswitch

tcp 0 0 10.0.3.15:5081 0.0.0.0:* LISTEN 3519/freeswitch

tcp 0 0 10.0.3.15:5060 0.0.0.0:* LISTEN 3519/freeswitch

tcp 0 0 10.0.3.15:5061 0.0.0.0:* LISTEN 3519/freeswitch

tcp 0 0 0.0.0.0:8080 0.0.0.0:* LISTEN 3519/freeswitch

tcp 0 0 0.0.0.0:8081 0.0.0.0:* LISTEN 3519/freeswitch

tcp 0 0 0.0.0.0:8082 0.0.0.0:* LISTEN 3519/freeswitch

tcp 0 0 10.0.3.15:7443 0.0.0.0:* LISTEN 3519/freeswitch

tcp 0 0 192.168.99.103:59607 192.168.99.103:3306 ESTABLISHED 3519/freeswitch

tcp 0 0 192.168.99.103:59606 192.168.99.103:3306 ESTABLISHED 3519/freeswitch

tcp 0 0 192.168.99.103:59611 192.168.99.103:3306 ESTABLISHED 3519/freeswitch

tcp6 0 0 ::1:5080 :::* LISTEN 3519/freeswitch

tcp6 0 0 ::1:5081 :::* LISTEN 3519/freeswitch

tcp6 0 0 ::1:5060 :::* LISTEN 3519/freeswitch

tcp6 0 0 ::1:5061 :::* LISTEN 3519/freeswitch

tcp6 0 0 ::1:8081 :::* LISTEN 3519/freeswitch

tcp6 0 0 ::1:8082 :::* LISTEN 3519/freeswitch

tcp6 0 0 :::8021 :::* LISTEN 3519/freeswitch

udp 0 0 10.0.3.15:5060 0.0.0.0:* 3519/freeswitch

udp 0 0 10.0.3.15:5080 0.0.0.0:* 3519/freeswitch

udp 0 0 0.0.0.0:1337 0.0.0.0:* 3519/freeswitch

udp6 0 0 ::1:5060 :::* 3519/freeswitch

udp6 0 0 ::1:5080 :::* 3519/freeswitch