Hi, Kamailio 3.2 is crashing if t_release() is executed after t_relay_to() returns -1 --- if ! t_relay_to() { t_release(); } --- Error -1 is generated in t_relay_to, in this case, when trying to reach a domainname which hasn't got a DNS record. Here the log of the execution of t_relay_to: ERROR: <core> [resolve.c:1540]: ERROR: sip_hostport2su: could not resolve hostname: "proxy1.jssip.net" ERROR: tm [ut.h:318]: failed to resolve "proxy1.jssip.net" ERROR: tm [t_fwd.c:1528]: ERROR: t_forward_nonack: failure to add branches ERROR: tm [tm.c:1369]: ERROR: w_t_relay_to: t_relay_to failed WARNING: script | uovyxruroybhnsy | call | t_relay(): -1 generic internal error This is the log for the execution of t_release(): <core> [mem/q_malloc.c:457]: BUG: qm_free: freeing already freed pointer, first free: tm: h_table.c: free_cell(157) - aborting ALERT: <core> [main.c:745]: child process 24217 exited by a signal 6 ALERT: <core> [main.c:748]: core was not generated INFO: <core> [main.c:760]: INFO: terminating due to SIGCHLD INFO: <core> [main.c:811]: INFO: signal 15 received Thanks in advance.