--snip--
Miner status page showing that pool alive and it accepts blocks, but public pool log shows that antminer connects and disconnects.
getblocktemplate tx count: 3519
new block
getblocktemplate tx count: 3522
getblocktemplate tx count: 3525
getblocktemplate tx count: 3525
Killing dead clients
getblocktemplate tx count: 3527
Client d7cddb19 disconnected, hadError?:false
block height change
block height change
block height change
New client ID: : ae04772d, ::ffff:192.168.1.170:43403
getblocktemplate tx count: 3520
getblocktemplate tx count: 3522
getblocktemplate tx count: 3523
Killing dead clients
getblocktemplate tx count: 3525
getblocktemplate tx count: 3525
getblocktemplate tx count: 3526
Client ae04772d disconnected, hadError?:false
New client ID: : 5dffbf71, ::ffff:192.168.1.170:43643
getblocktemplate tx count: 3527
getblocktemplate tx count: 3529
Killing dead clients
getblocktemplate tx count: 3530
getblocktemplate tx count: 3530
getblocktemplate tx count: 3533
getblocktemplate tx count: 3535
Client 5dffbf71 disconnected, hadError?:false
Killing dead clients
New client ID: : 822fc25b, ::ffff:192.168.1.170:43965
getblocktemplate tx count: 3536
I guess it some problem with public pool config again. Previously i tested this Antminer S9 on real btc pool (antpool) and it was working fine without disconnects.
All i can suggest is to also check your S9 log, either from it's webpage[1] or SSH (if you already use custom firmware which allow that) in order to see whether S9 mention reason of the disconnection.