diff --git a/test-integ/topoutil/asserter_blankspace.go b/test-integ/topoutil/asserter_blankspace.go
index caba825783ef..65e617a1a8a0 100644
--- a/test-integ/topoutil/asserter_blankspace.go
+++ b/test-integ/topoutil/asserter_blankspace.go
@@ -64,12 +64,20 @@ func (a *Asserter) checkBlankspaceNameViaHTTPWithCallback(
 	t.Helper()
 
 	var (
-		node   = service.Node
-		addr   = fmt.Sprintf("%s:%d", node.LocalAddress(), service.PortOrDefault(upstream.PortName))
-		client = a.mustGetHTTPClient(t, node.Cluster)
+		node         = service.Node
+		internalPort = service.PortOrDefault(upstream.PortName)
+		addr         = fmt.Sprintf("%s:%d", node.LocalAddress(), internalPort)
+		client       = a.mustGetHTTPClient(t, node.Cluster)
 	)
 
 	if useHTTP2 {
+		// We can't use the forward proxy for http2, so use the exposed port on localhost instead.
+		exposedPort := node.ExposedPort(internalPort)
+		require.True(t, exposedPort > 0)
+
+		addr = fmt.Sprintf("%s:%d", "127.0.0.1", exposedPort)
+
+		// This will clear the proxy field on the transport.
 		client = EnableHTTP2(client)
 	}
 
diff --git a/test-integ/topoutil/http2.go b/test-integ/topoutil/http2.go
index 136d3d3cdc3c..148074e5638f 100644
--- a/test-integ/topoutil/http2.go
+++ b/test-integ/topoutil/http2.go
@@ -14,6 +14,9 @@ import (
 
 // EnableHTTP2 returns a new shallow copy of client that has been tweaked to do
 // h2c (cleartext http2).
+//
+// Note that this clears the Client.Transport.Proxy trick because http2 and
+// http proxies are incompatible currently in Go.
 func EnableHTTP2(client *http.Client) *http.Client {
 	// Shallow copy, and swap the transport
 	client2 := *client