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Hi, thanks for your help! The option SO_BINDTODEVICE is what we were looking for! Is there any example Code on how to receive Multicast Packets with emnet? We are currently trying by first calling: IP_IGMP_AddEx(vlan1_iface); And then: IP_IGMP_JoinGroup(vlan1_iface, 0xE0000016); But if we then receive a Multicast Message with this destination address, the packet gets dropped, because the function "IP_UDP_OnRxIP4" can't find a socket, that matches this multicast-address. Best regards Henrik

Hi, i have another question: What is the preffered way to bind a socket to a specific Interface? Background: We want to have several VLAN-Interfaces and want to send traffic from different applications in different vlans. Best regards

Ok, thanks. I have now written wrappers for those functions. But now i am struggling with the fact, that there is no getaddrinfo function? Do you have any advice, how i can implement this with your functions given?

Hello, i am currently in the process of porting a OPC UA Stack to emNet. I am struggeling with the fact, that emNet isn't fully Berkeley socket compatible. For example the function setsockopt() doesnt support many hints: - IP_MULTICAST_LOOP - IP_MULTICAST_IF - IP_ADD_MEMBERSHIP - IP_DROP_MEMBERSHIP Those are all functions related to Multicast. IF i understand right, I can mimic the IP_ADD/IP_DROP_MEMBERSHIP options with the emNet Functions IP_IGMP_JoinGroup()/IP_IGMP_LeaveGroup(). Am i right wit…