Having a very hard time trying to connect an S9 to the unit qt wallet in server mode. All the credentials are correct, we allow the ip of the S9 in config, we set rpc port to 14157, use rpc pass/user.

What is the protocol of the unit wallet? Is it GBT?

We also tried using an intermediate proxy BFGminer, which connected to the wallet fine, but then the S9 cant connect to BFGminer either. Is there some extra steps that need to be made pointing S9 to a local server vs a pool, the S9 works perfectly connected to any pool otherwise.

Thank you in advance.