@miconda seems issue is fixed. I've running traffic (50-50) with affected 5.5 and nightly 5.6 and it's ok with 5.6. Can you backport to 5.5 ? Thanks!
``` root@kamailio56:~# grep ksr_lwsc_callback /var/log/syslog root@kamailio56:~# ```
``` root@kamailio5:~# grep -c ksr_lwsc_callback /var/log/syslog 3709 root@kamailio5:~# ```