diff --git a/teuthology/orchestra/connection.py b/teuthology/orchestra/connection.py
index 9a6443dc2..4be1cc383 100644
--- a/teuthology/orchestra/connection.py
+++ b/teuthology/orchestra/connection.py
@@ -94,6 +94,7 @@ def connect(user_at_host, host_key=None, keep_alive=False, timeout=60,
     )
 
     if config.tunnel:
+        log.debug(f"Environment: {os.environ}")
         for tunnel in config.tunnel:
             if host in tunnel.get('hosts'):
                 bastion = tunnel.get('bastion')