diff --git a/uncloud/hack/net.py b/uncloud/hack/net.py
new file mode 100644
index 0000000..142eeb7
--- /dev/null
+++ b/uncloud/hack/net.py
@@ -0,0 +1,21 @@
+import subprocess
+
+class VXLANBridge(object):
+    def __init__(self, bridgedev=None, uplinkdev=None):
+        self.management_vni = 1
+
+    cmd_create_vxlan = "ip -6 link add {vxlandev} type vxlan id {netid} dstport 4789 group ff05::{netid} dev {uplinkdev} ttl 5"
+    cmd_up_dev = "ip link set {dev} up"
+    cmd_create_bridge="ip link add {bridgedev} type bridge"
+    cmd_add_to_bridge="ip link set {vxlandev} master {bridgedev} up"
+    cmd_add_addr="ip addr add {ip} dev {bridgedev}"
+
+    def setup_networking(dev=wlan0, v6net):
+        ip=2a0a:e5c1:111:888::48/64
+        vxlandev=vxlan${netid}
+        bridgedev=br${netid}
+
+
+class DNSRA(object):
+    def __init__(self):
+        pass