Hello Dimitris, On 30/11/16(Wed) 13:44, Dimitris Papastamos wrote: > [...] > I am working on a program that requires putting the node in > all-multicast mode. The program needs to see all the packets going to > solicited-node multicast addresses. I did this by modifying the > interface flags to add IFF_ALLMULTI.
IFF_ALLMULTI is a private flag. Only interface drivers should mess with it. > Unfortunately recvmsg() was only returning for the packets destined > for multicast groups I had explicitly joined and not all of them. You certainly want to look at RFC 3376 and implement the IP_MSFILTER and IPV6_MSFILTER socket options. Some code exist in Linux/FreeBSD/Solaris but I'm not sure how much of it is needed in your case. I'll be happy to review such diff. Cheers, Martin
