tun device creation

tunmgr/requirements.txt

+python-pytun==2.2.1
+wheel==0.24.0

tunmgr/tunmgr.py

+#!/usr/bin/python3
+
+from pytun import TunTapDevice
+import selectors
+import socket
+
+
+tun = TunTapDevice()
+
+
+tun.addr = '10.8.0.1'
+tun.dstaddr = '10.8.0.2'
+tun.netmask = '255.255.255.0'
+tun.mtu = 400
+
+tun.up()
+
+PEER = "10.4.25.25"
+PORT = 1456
+s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+s.bind(('', PORT))
+
+
+sel = selectors.DefaultSelector()
+
+sel.register(tun, selectors.EVENT_READ, "tun")
+sel.register(s, selectors.EVENT_READ, "sms")
+
+while 1:
+    for key, events in sel.select():
+        if key.data=="tun":
+            s.sendto(tun.read(tun.mtu), (PEER, PORT))
+        elif key.data == "sms":
+            tun.write(s.read(tun.mtu))
+            
+
+
+