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-rw-r--r--python/vyos/ifconfig/tunnel.py46
1 files changed, 46 insertions, 0 deletions
diff --git a/python/vyos/ifconfig/tunnel.py b/python/vyos/ifconfig/tunnel.py
index 4122d1a2f..05520ba84 100644
--- a/python/vyos/ifconfig/tunnel.py
+++ b/python/vyos/ifconfig/tunnel.py
@@ -17,6 +17,9 @@
# https://community.hetzner.com/tutorials/linux-setup-gre-tunnel
from copy import deepcopy
+from netaddr import EUI
+from netaddr import mac_unix_expanded
+from random import getrandbits
from vyos.ifconfig.interface import Interface
from vyos.ifconfig.afi import IP4, IP6
@@ -119,10 +122,53 @@ class _Tunnel(Interface):
self.change.format(**self.config), option, value))
return True
+
@classmethod
def get_config(cls):
return dict(zip(cls.options, ['']*len(cls.options)))
+ def get_mac(self):
+ """
+ Get current interface MAC (Media Access Contrl) address used.
+
+ NOTE: Tunnel interfaces have no "MAC" address by default. The content
+ of the 'address' file in /sys/class/net/device contains the
+ local-ip thus we generate a random MAC address instead
+
+ Example:
+ >>> from vyos.ifconfig import Interface
+ >>> Interface('eth0').get_mac()
+ '00:50:ab:cd:ef:00'
+ """
+ # we choose 40 random bytes for the MAC address, this gives
+ # us e.g. EUI('00-EA-EE-D6-A3-C8') or EUI('00-41-B9-0D-F2-2A')
+ tmp = EUI(getrandbits(40)).value
+ # set locally administered bit in MAC address
+ tmp |= 0x020000000000
+ # convert integer to "real" MAC address representation
+ mac = EUI(hex(tmp).split('x')[-1])
+ # change dialect to use : as delimiter instead of -
+ mac.dialect = mac_unix_expanded
+ return str(mac)
+
+ def update(self, config):
+ """ General helper function which works on a dictionary retrived by
+ get_config_dict(). It's main intention is to consolidate the scattered
+ interface setup code and provide a single point of entry when workin
+ on any interface. """
+
+ # call base class first
+ super().update(config)
+
+ # Enable/Disable of an interface must always be done at the end of the
+ # derived class to make use of the ref-counting set_admin_state()
+ # function. We will only enable the interface if 'up' was called as
+ # often as 'down'. This is required by some interface implementations
+ # as certain parameters can only be changed when the interface is
+ # in admin-down state. This ensures the link does not flap during
+ # reconfiguration.
+ state = 'down' if 'disable' in config else 'up'
+ self.set_admin_state(state)
class GREIf(_Tunnel):
"""