how mine to remote wallet?
It's not currently possible, and isn't very high on the priority list compared to some other major features we need.
I am currently mining to a remote wallet, using the "redir" utility in Linux. Redir lets you redirect a local TCP port to a remote TCP port.
On my mining machine, I'm doing as follows:
redir --lport=9980 --caddr=192.168.1.131 --cport=9980 &
./sia-gpu-miner -C 50 -I 20
And it works, I already found a block.
You'll probably have to install redir, e.g. in Ubuntu with
sudo apt-get install redir