I am using the 1.6  version. I specified both same value as bellow figure unless GLOO_SOCKET_IFNAME that I did not set  it for the master node.

Now when I set GLOO_SOCKET_IFNAME in the master node as well, the worker sent back this error:
image1244×339 149 KB
Both errors come only on the worker node. and it happens only when the master is running.
I can ping and telnet to the 2222 port of master node from worker node.
When I changed the backend it faced another error. I am working if I can solve it.