Hmm, that address only shows up in the logs of the old node (1194 accepted shares, 302 DOA, 525 blocks found)! Do you perchance have some form of DNS caching in your network, or on the antminer? I have this feeling that you'd rather stick with solomining now, but if you happen to get bored waiting for a block to show up   - you can always use the new node's IP 149.210.168.71:22646 .