My log after firing up a 980ti. the whole sequence took 5 minutes to fail.
23:56:21:Successfully acquired database lock
23:56:21:Enabled folding slot 01: READY gpu:0:GM200 [GeForce GTX 980 Ti] 5632
23:56:21:WU00:FS01:Connecting to 65.254.110.245:80
23:56:22:WU00:FS01:Assigned to work server 140.163.4.231
23:56:22:WU00:FS01:Requesting new work unit for slot 01: READY gpu:0:GM200 [GeForce GTX 980 Ti] 5632 from 140.163.4.231
23:56:22:WU00:FS01:Connecting to 140.163.4.231:8080
23:59:18:WU00:FS01:Downloading 79.27MiB
23:59:26:WU00:FS01:Download 0.55%
23:59:49:WU00:FS01:Download 1.02%
23:59:55:WU00:FS01:Download 2.60%
00:00:08:WU00:FS01:Download 4.34%
00:00:14:WU00:FS01:Download 4.65%
00:00:20:WU00:FS01:Download 7.65%
00:00:26:WU00:FS01:Download 13.09%
00:00:33:WU00:FS01:Download 16.56%
00:00:41:WU00:FS01:Download 18.37%
00:00:52:WU00:FS01:Download 19.40%
00:01:03:WU00:FS01:Download 19.95%
00:01:14:WU00:FS01:Download 20.74%
00:01:25:WU00:FS01:Download 22.16%
00:01:31:WU00:FS01:Download 24.28%
00:01:39:WU00:FS01:Download 24.52%
00:01:45:WU00:FS01:Download 26.18%
00:02:00:WU00:FS01:Download 27.91%
00:02:07:WU00:FS01:Download 29.25%
00:02:13:WU00:FS01:Download 31.54%
00:02:35:WU00:FS01:Download 33.67%
00:02:46:WU00:FS01:Download 36.27%
00:02:48:ERROR:WU00:FS01:Exception: Transfer failed
00:02:49:WU00:FS01:Connecting to 65.254.110.245:80
00:02:49:WU00:FS01:Assigned to work server 140.163.4.231
00:02:49:WU00:FS01:Requesting new work unit for slot 01: READY gpu:0:GM200 [GeForce GTX 980 Ti] 5632 from 140.163.4.231
00:02:49:WU00:FS01:Connecting to 140.163.4.231:8080
00:02:49:WARNING:WU00:FS01:WorkServer connection failed on port 8080 trying 80
00:02:49:WU00:FS01:Connecting to 140.163.4.231:80
00:02:49:ERROR:WU00:FS01:Exception: Failed to connect to 140.163.4.231:80: Connection refused