The code needs to remember what "mech_context._binding.host” was before calling _process_bind_router (e.g. “old_host") and then compare that to “host” (e.g. “old_host” == “host”).
The code needs to remember what "mech_context. _binding. host” was before calling _process_ bind_router (e.g. “old_host") and then compare that to “host” (e.g. “old_host” == “host”).