Hi, I would like to announce the attached patch, it's not very pretty, but have proved to be working well under my required circumstances.
What it does: * Handles IGMPv2 snooping * Handles mcast-traffic flowing "downstream" on the server-side of a multi-client server. * Handles both group-timeouts, and immediate-leave. * Handles TAP-VPN * Works well with even relatively heavy multicast-traffic without much extra system-load. (Of course offloads the server, compared to the previous broadcast-behaviour.) * Spit out some extra output for debugging purposes. * Have been round-the-clock running on a relatively heavily used system for a couple of months now, without noticeable issues in stability or memory consumption. * Run with a vanilla 2.0.x OpenVPN client (multiple releases tested) What it does not: * Respect general queries * Handle TUN-VPN * Handle IGMPv3 (at least probably not, it does in theory, but without _any_ testing performed) * Pretty much anything else I do not recommend this for inclusion into OpenVPN, since it may very well crash OpenVPN if ran in TUN-mode. This patch is strictly submitted for anyone curious to notice. A proper patch should be written taking gq:s and TUN into consideration from start. If you want to reply, ensure you do it with a cc to me, since I'm not on the list. Regards / Ulrik
