- Tout le monde a l'air de poster en anglais alors je fais de même ... - Hi Alain, I was just wondering how can I setup udpcast in order for my udp- sender to communicate with its receivers on another vlan. I am aware on the TTL need to be greater than 1. The problem is more about establishing the session. It seems the receivers and the sender are finding each others broadcasting their HELLO command on the subnet; of course these don't pass through the gateway and receivers will never see their sender. I looked at the mcast-rdv-address command line switch but I don't known how to use it : should it point to the IGMP router address ? maybe I missed something. Thanks for you help Have a nice day Alban