I have written some code that generates and receives multicast traffic, and it works fine in Ubuntu and Red Hat 5.5. However, when I upgraded Red Hat to 6.3, Multicast receive stopped working. Sending is still working fine, but receiving isn't.
The Multicast connection opens without errors, and the receive function call returns no errors. However, it is simply not receiving any data (it returns 0 bytes received). I know that the data is being sent, because I can receive it on another machine. But the Red Hat 6.3 machine isn't seeing it.
To write the code, I used the HawkNL
Any help is appreciated.