diff --git a/ci/prepare_gtest_network.sh b/ci/prepare_gtest_network.sh
index 1159627..86b9e7b 100644
--- a/ci/prepare_gtest_network.sh
+++ b/ci/prepare_gtest_network.sh
@@ -1,5 +1,8 @@
 #!/usr/bin/env bash
 
+# install iproute2
+yum install -y iproute
+
 # create tun device
 ip tuntap add dev tun0 mode tun