Currently i'am trying to accomplish the very same situation, using the fiber from KPN on my CRS125. I Switched from a RB2011 to a CRS125. The main reason was to get more speed of my router. We have 500/500mbit over here, but with the RB2011 we only get ~200mbit d/u. So i though the CRS125 could acc...

At the last rules, which port(s) did you add, since it seems to be required? I've tried ether2, ether2 & ether22 (connected to STB) and just ether22. None of those combinations worked. What do you mean by last rules? If you use firewall then you have to allow IGMP & UDP trough it. (My examp...