Can you get the sender ip address of a multicast datagram?

Hi,
We are developing an application which receives multicast datagrams with some network information. We would like to know if there's a way to get the ip address of the multicast datagram sender to show this information along with the network information included in the datagram. If it is not possible, we are considering to include the sender ip address within the datagram information.
Thank you very much for the help,
Regards,
Claudia

Mmm...
We start searching in the wrong direction: the initial idea was trying to retrieve the sender IP address from the multicast socket. But that didn't make sense for us... we didn't come up with the idea of retrieving that information from the datagram itself... :-$
Sometimes the solution is right there in front of you and you start wandering around... ;-)
Thank you again!
Claudia
(Another explanation is that maybe we spend too much time working... :-) and ideas do not come easily)

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Can you get the sender ip address of a multicast datagram?

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