It seems like multiplayer for Call of Duty: Modern Warfare on the original Wii may have seen its final days.
According to a recent report on Reddit, the Wii port of Call of Duty: Modern Warfare has lost all contact with servers.
It is worth noting that Activision should be lauded about their support of the game thus far.
In 2014, Nintendo discontinued their official Nintendo Wi-Fi Connection (in favor of Nintendo Network), shutting down most multiplayer or online services in nearly every Wii game.