T5007: Fix multicast implementation for the tunnel interfaces

Multicast has not been implemented for the tunnel interfaces.
We have only configuration CLI commands that do anything.
Fix it.

  ip link set dev <tag> multicast on
  ip link set dev <tag> multicast off

1 files changed, 12 insertions, 0 deletions

diff --git a/python/vyos/ifconfig/tunnel.py b/python/vyos/ifconfig/tunnel.py
index 5258a2cb1..f776240a1 100644
--- a/python/vyos/ifconfig/tunnel.py
+++ b/python/vyos/ifconfig/tunnel.py
@@ -162,6 +162,15 @@ class TunnelIf(Interface):
         """ Get a synthetic MAC address. """
         return self.get_mac_synthetic()
 
+    def set_multicast(self):
+        """ Set multicast """
+        if self.config.get('multicast', 'disable') == 'enable':
+            cmd = 'ip link set dev {ifname} multicast on'
+        else:
+            cmd = 'ip link set dev {ifname} multicast off'
+
+        self._cmd(cmd.format(**self.config))
+
     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
@@ -170,5 +179,8 @@ class TunnelIf(Interface):
         # Adjust iproute2 tunnel parameters if necessary
         self._change_options()
 
+        # Add multicast
+        self.set_multicast()
+
         # call base class first
         super().update(config)