[SR-Users] set host as inactive and probing in dispatcher

hi, i use "ds_select_domain()" to route a call. if the destination reply with an error i am using the next lines in a route that i called from the failure route: if($avp(OSPRPL)!=404) { ds_mark_dst("IP"); } after trying this line i do "kamctl fifo ds_list" and i see the host is still at "AX". and in the next call the dispatcher still tries the same destination. why? how do i set a destinatio in dispatcher to be inactive? this is my modparams: #!ifdef WITH_DISPATCHER #------ dispatcher params --------- modparam("dispatcher", "db_url", DBURL) modparam("dispatcher", "dst_avp", "$avp(dsdst)") modparam("dispatcher", "cnt_avp", "$avp(dscnt)") modparam("dispatcher", "grp_avp", "$avp(dsgrp)") modparam("dispatcher", "attrs_avp", "$avp(dsattrs)") modparam("dispatcher", "ds_ping_from", "sip:user@host.com") modparam("dispatcher", "ds_ping_reply_codes", "class=2;code=405") modparam("dispatcher", "ds_ping_interval", 30) modparam("dispatcher", "ds_probing_mode", 1) modparam("dispatcher", "ds_hash_size", 8) modparam("dispatcher", "flags", 2) #!endif