fix: never park the last present family as absent

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Uc9V1v7iXruubpoLiSE24M
2026-09-21 09:50:43 -04:00
parent 8122c8d7dc
commit 95355374f8
5 changed files with 72 additions and 3 deletions
@@ -485,12 +485,18 @@ class Host:
        """Host-level status: down, overdue, simplex, up or unknown.

        overdue: every present family is overdue. simplex: both present, one up, one overdue
-        (same severity as up). Families the client reports absent are not considered.
+        (same severity as up). Families the client reports absent are not considered,
+        unless none is present: then every connection not parked as ABSENT is considered.
        """
        conns = self.connections
        if any(c.state == Connection.DOWN for c in conns.values()):
            return "down"
        present = [c for afam, c in conns.items() if self.family_present(afam)]
+        if not present:
+            # The client reports no protocol present (e.g. its internet probe fails on every
+            # family) yet may still be heard: monitor whatever is not parked as absent, so a
+            # host that then dies is "overdue", not silently "unknown".
+            present = [c for c in conns.values() if c.state != Connection.ABSENT]
        up = sum(c.state == Connection.UP for c in present)
        overdue = sum(c.state == Connection.OVERDUE for c in present)
        if up and overdue: