Starting a background job on the remote host over ssh hangs the calling script

I have this code : ``` for i in $ipb $ipc $ipd; do ssh -i ~/.ssh/'key' 'name'@${i} /bin/bash Enter to be able to type other commands. The problem is not Redis-related, but most likely comes from how the script is written, so no need to know about Redis for this one I think.  Ssh is also working fine. What must I change to make it run all three commands (one on each IP address)?