diff --git a/kubetest/kops.go b/kubetest/kops.go
index 90ab1e4ee655..46b3a2e5cde4 100644
--- a/kubetest/kops.go
+++ b/kubetest/kops.go
@@ -402,7 +402,7 @@ func (k kops) Up() error {
 		if err := httpRead("https://v4.ifconfig.co", &b); err != nil {
 			return err
 		}
-		externalIP := strings.TrimSpace(b.String())
+		externalIP := strings.TrimSpace(b.String()) + "/32"
 		log.Printf("Using external IP for admin access: %v", externalIP)
 		k.adminAccess = externalIP
 	}