--- samba-4.14.0/source3/smbd/service.c	2021-01-21 14:20:40.000000000 +0100
+++ samba-4.14.0-liu/source3/smbd/service.c	2021-03-11 09:46:44.480926000 +0100
@@ -353,7 +353,10 @@
 		if (!lp_guest_ok(snum)) {
 			DBG_WARNING("guest user (from session setup) "
 				  "not permitted to access this share "
-				  "(%s)\n", lp_const_servicename(snum));
+				  "(%s) [from %s]\n",
+				    lp_const_servicename(snum),
+				    tsocket_address_string(sconn->remote_address, talloc_tos())
+				    );
 			return NT_STATUS_ACCESS_DENIED;
 		}
 	} else {
@@ -362,9 +365,11 @@
 				   session_info->security_token, snum)) {
 			DBG_WARNING("user '%s' (from session setup) not "
 				  "permitted to access this share "
-				  "(%s)\n",
+				  "(%s) [from %s]\n",
 				  session_info->unix_info->unix_name,
-				  lp_const_servicename(snum));
+				  lp_const_servicename(snum),
+				  tsocket_address_string(sconn->remote_address, talloc_tos())
+				  );
 			return NT_STATUS_ACCESS_DENIED;
 		}
 	}