From c0f59f1e1d8cddd0e6f87adc3b7a56fb05805a17 Mon Sep 17 00:00:00 2001
From: boratanrikulu <me@bora.sh>
Date: Sat, 27 Jul 2024 19:48:35 +0300
Subject: [PATCH] avoid using dns cache in tests

---
 internal/ebpf/testing.go | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/internal/ebpf/testing.go b/internal/ebpf/testing.go
index fe8b1ff..f8f1084 100644
--- a/internal/ebpf/testing.go
+++ b/internal/ebpf/testing.go
@@ -1,6 +1,7 @@
 package ebpf
 
 import (
+	"context"
 	"net"
 	"testing"
 	"time"
@@ -104,9 +105,16 @@ func TTCPWrite(c *qt.C, address string, ok bool) {
 	c.Assert(err, qt.IsNil)
 }
 
-// TDNSLookup tests if the DNS lookup works well.
+// TDNSLookup tests if the DNS lookup works well without using DNS cache.
 func TDNSLookup(c *qt.C, dns string, ok bool) {
-	_, err := net.LookupIP(dns)
+	r := &net.Resolver{
+		PreferGo: true,
+		Dial: func(ctx context.Context, network, address string) (net.Conn, error) {
+			return net.Dial(network, "8.8.8.8:53")
+		},
+	}
+
+	_, err := r.LookupIP(context.Background(), "ip", dns)
 	if !ok {
 		c.Assert(err, qt.IsNotNil)
 		return