[SR-Users] dispatcher problem

Hi! I have some problems with 3.0 dispatcher module: module configuration: # ----- dispatcher ----- /* enable failover support */ modparam("dispatcher", "flags", 2) modparam("dispatcher", "dst_avp", "$avp(i:271)") modparam("dispatcher", "grp_avp", "$avp(i:272)") modparam("dispatcher", "cnt_avp", "$avp(i:273)") If I understand correctly, then dispatcher should send OPTIONS once a destination is in "probe" mode. But this never happens, e.g. if I set "probe" mode manually, the destination is set to active again: # kamctl fifo ds_list SET_NO:: 1 SET:: 1 URI:: sip:gucci.labs.nic.at flag=A URI:: sip:nvst.labs.nic.at flag=A # kamctl fifo ds_set_state i 1 sip:gucci.labs.nic.at # kamctl fifo ds_list SET_NO:: 1 SET:: 1 URI:: sip:gucci.labs.nic.at flag=I URI:: sip:nvst.labs.nic.at flag=A # kamctl fifo ds_set_state p 1 sip:gucci.labs.nic.at # kamctl fifo ds_list SET_NO:: 1 SET:: 1 URI:: sip:gucci.labs.nic.at flag=A URI:: sip:nvst.labs.nic.at flag=A I also tried ds_probing_mode=1 which IIUC should send OPTIONS also to active destinations to find out if the destination is alive. But I never see any OPTIONS requests. Is there something I am doing completely wrong? thanks Klaus