route-update.sh: detect partial route loss with 1% tolerance

Previously auto-recovery only triggered when routing table was completely empty. Now it also reloads when route count drops below 99% of expected (from resolved state file). Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

route-update.sh: detect partial route loss with 1% tolerance
c2743a29 · Vitaly Lipatov · cc74595a · c2743a29
Commit c2743a29 authored Feb 17, 2026 by Vitaly Lipatov
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route-update.sh router/route-update.sh +7 -0

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--- a/router/route-update.sh
+++ b/router/route-update.sh
@@ -229,6 +229,13 @@ process_routes()
                elif [ "$route_count" = "0" ] ; then
                    need_reload=1
                    vlog "[$name]$label route table $table empty"
+                elif [ -f "$STATE_DIR/$state/resolved" ] ; then
+                    local expected=$(wc -l < "$STATE_DIR/$state/resolved")
+                    local threshold=$(( expected - expected / 100 ))
+                    if [ "$route_count" -lt "$threshold" ] ; then
+                        need_reload=1
+                        vlog "[$name]$label route count $route_count < $threshold (expected $expected, 1% tolerance)"
+                    fi
                fi
                if [ -n "$need_reload" ] ; then
                    log "[$name]$label Rules/routes lost, forcing reload"