[SR-Users] TOPOS module: Topology hiding only for a specific host

Hi all I am playing with topos on kamailio 5.5.6, but when I want to activate it only for specific hosts, it works only on the initial INVITE request. Subsequent requests like PRACK, ACK, BYE are not modified. As soon as I remove the code part below, it works for all requests, but I need it only on a specific host. event_route[topos:msg-sending] {     # Topology hiding for one host     if (is_request() and $sndto(ip)=="1.1.1.1") {             xlog("L_INFO","$ci Test event_route topos:msg-sending\n");       } else {             # No topology hiding             drop;       } } Is it meant to function like that or is it a bug? Regards Stefan