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[client] add DIAG logging to trace exit-node v6 (::/0) route filtering

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Temporary diagnostics to find why a deselected v4 exit node's synthesized
::/0 route still reaches the tunnel. Logs the full install path: incoming
client networks, route-selector state before/after the management-driven
update, what updateExitNodeSelections deselects/selects, and per-route
KEEP/SKIP/DROP decisions in FilterSelectedExitNodes and applyExitNodeFilter.
To be reverted once the real root cause is confirmed from a client log.
This commit is contained in:
Zoltán Papp
2026-05-31 14:25:50 +02:00
parent c7499cf8fc
commit 84867c7e45
2 changed files with 56 additions and 0 deletions
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client/internal/routemanager/manager.go
+18
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@@ -428,10 +428,16 @@ func (m *DefaultManager) UpdateRoutes(
var merr *multierror.Error
if !m.disableClientRoutes {
log.Debugf("DIAG UpdateRoutes: incoming %d client networks: %v", len(clientRoutes), haKeysList(clientRoutes))
log.Debugf("DIAG UpdateRoutes: selector BEFORE management update: %s", m.routeSelector.MarshalSummary())
// Update route selector based on management server's isSelected status
m.updateRouteSelectorFromManagement(clientRoutes)
log.Debugf("DIAG UpdateRoutes: selector AFTER management update: %s", m.routeSelector.MarshalSummary())
filteredClientRoutes := m.routeSelector.FilterSelectedExitNodes(clientRoutes)
log.Debugf("DIAG UpdateRoutes: AFTER filter, %d networks remain: %v", len(filteredClientRoutes), haKeysList(filteredClientRoutes))
if err := m.updateSystemRoutes(filteredClientRoutes); err != nil {
merr = multierror.Append(merr, fmt.Errorf("update system routes: %w", err))
@@ -766,6 +772,8 @@ func (m *DefaultManager) checkManagementSelection(routes []*route.Route, netID r
func (m *DefaultManager) updateExitNodeSelections(info exitNodeInfo) {
routesToDeselect := m.getRoutesToDeselect(info.allIDs)
log.Debugf("DIAG updateExitNodeSelections: allIDs=%v userSelected=%v userDeselected=%v selectedByManagement=%v -> routesToDeselect(no user selection)=%v",
info.allIDs, info.userSelected, info.userDeselected, info.selectedByManagement, routesToDeselect)
m.deselectExitNodes(routesToDeselect)
m.selectExitNodesByManagement(info.selectedByManagement, info.allIDs)
}
@@ -805,4 +813,14 @@ func (m *DefaultManager) selectExitNodesByManagement(selectedByManagement []rout
func (m *DefaultManager) logExitNodeUpdate(info exitNodeInfo) {
log.Debugf("Updated route selector: %d exit nodes available, %d selected by management, %d user-selected, %d user-deselected",
len(info.allIDs), len(info.selectedByManagement), len(info.userSelected), len(info.userDeselected))
log.Debugf("DIAG logExitNodeUpdate: allIDs=%v selectedByManagement=%v userSelected=%v userDeselected=%v",
info.allIDs, info.selectedByManagement, info.userSelected, info.userDeselected)
}
func haKeysList(m route.HAMap) []route.HAUniqueID {
out := make([]route.HAUniqueID, 0, len(m))
for k := range m {
out = append(out, k)
}
return out
}