New (*,G) rule does not unblock all cached (S,G)

[troglobit]

When SMCRoute starts up, without any routing rules, and there already exist incoming multicast streams for a given group, G. Say S1 and S2 send to G, then SMCRoute will receive IGMPMSG_NOCACHE from the kernel. One for S1 and one for S2. These messages would continue forever, but SMCRoute writes a block rule with no outbound interfaces to silence this.

When a user later calls smcroutectl to add a (*,G) from the incoming interface to a given outbound smcrouted must traverse the list of all previously blocked incoming streams matching the new (*,G) route. Currently SMCRoute only unblocks one (the first?) of the inbound streams.