diff --git a/napalm_device_types/fixes.py b/napalm_device_types/fixes.py
index 9aa3a2b..33c2ea0 100644
--- a/napalm_device_types/fixes.py
+++ b/napalm_device_types/fixes.py
@@ -22,7 +22,7 @@ They replace ``run_device_action`` (docs/STRUCTURE.md):
 
 from __future__ import annotations
 
-from typing import Any, Callable, List, Sequence, Tuple, TYPE_CHECKING
+from typing import Any, Callable, List, Optional, Sequence, Tuple, TYPE_CHECKING
 
 from napalm_device_types.models import (
     FixResultDict,
@@ -77,7 +77,16 @@ class SnmpAgentMixin:
             ]
         )
 
-    if TYPE_CHECKING:  # pragma: no cover - the steps a driver implements
+    if TYPE_CHECKING:  # pragma: no cover - declared for type checkers only
+
+        def get_management_peer(self) -> Optional[str]:
+            """The address the device sees this management connection come from
+            (for SSH, the client side of ``SSH_CONNECTION``), or None when it cannot
+            tell. A fact for the caller choosing ``allowed_sources``; optional --
+            a driver that cannot tell does not implement it."""
+            ...
+
+        # The steps a driver implements:
 
         def _install_snmp_agent(self) -> FixStepOutcomeDict: ...