As the title says, is there a way to increase the limit of 20 multicast groups that you can join on a given socket? Is there some system setting that I am missing or is there some hard limit which cannot be exceeded?
Well, incase someone is searching for this, the following parameter exists:
Currently my install says 20, in the sources, I also see:
I think bumping up the system parameter may be enough, else will have to patch the header as well!
EDIT: looks like bumping up the system parameter does the trick.