From ed8abf52f4cd2b52185b955cdd4765fa8b6f75df Mon Sep 17 00:00:00 2001
From: dmiller <dmiller@e0a8ed71-7df4-0310-8962-fdc924857419>
Date: Tue, 18 Aug 2026 16:06:54 +0000
Subject: [PATCH] Don't schedule sends on disconnected servers

---
 libnetutil/massdns.cc | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/libnetutil/massdns.cc b/libnetutil/massdns.cc
index c95f30028..7cb08269c 100644
--- a/libnetutil/massdns.cc
+++ b/libnetutil/massdns.cc
@@ -1029,9 +1029,11 @@ int DNS::ResolverImpl::deal_with_timedout_reads(bool adjust_timing) {
           }
 
           std::list<dns_server>::iterator servItemp = servI;
-          servItemp++;
+          do {
+            servItemp++;
 
-          if (servItemp == servs.end()) servItemp = servs.begin();
+            if (servItemp == servs.end()) servItemp = servs.begin();
+          } while (servItemp != servI && servItemp->status != dns_server::CONNECTED);
 
           dns_server *next_server = &*servItemp;
           tpreq->tries = 0;