Hi, we're setting up OpenSER 1.3.0 on a FreeBSD system, with the mi_datagram module configured, and when we start up openser, we get the following error: /usr/local/sbin/openser[3139]: NOTICE presence:child_init: init_child [1] pid [3139] /usr/local/sbin/openser[3138]: ERROR:mi_datagram:mi_init_datagram_server: bind: Invalid argument /usr/local/sbin/openser[3142]: NOTICE presence:child_init: init_child [4] pid [3142] /usr/local/sbin/openser[3138]: CRITICAL:mi_datagram:pre_datagram_process: function mi_init_datagram_server returned with error!!! /usr/local/sbin/openser[3138]: ERROR:core:start_module_procs: pre-fork function failed for process "MI Datagram" in module mi_datagram In the openser configuration: modparam ("mi_datagram", "socket_name", "udp:[ip.add.ress.here]:5068") We checked that the port is not in use. Note that this is working fine when running the same openser version on a linux based system. We are also not having this issue when we specify a UNIX socket. Do you have any idea what could be wrong? kind regards, Sigrid