diff --git a/app/src/main/jni/netguard/ip.c b/app/src/main/jni/netguard/ip.c
index 40ef55fc..e34e5792 100644
--- a/app/src/main/jni/netguard/ip.c
+++ b/app/src/main/jni/netguard/ip.c
@@ -293,7 +293,7 @@ void handle_ip(const struct arguments *args,
     struct allowed *redirect = NULL;
     if (protocol == IPPROTO_UDP && has_udp_session(args, pkt, payload))
         allowed = 1; // could be a lingering/blocked session
-    else if (protocol == IPPROTO_TCP && !syn)
+    else if (protocol == IPPROTO_TCP && (!syn || dport != 53))
         allowed = 1; // assume existing session
     else {
         jobject objPacket = create_packet(