multicast group parsing for vxlan interfaces fails

[taintedbit]

Hi there,

there is an issue when parsing the multicast-group configuration for a vxlan interface.

Symptoms:

• if the multicast group is not set for the interface, the returned value is decap

Reason:

• the dumped running-config includes all the config commands, including the vxlan multicast-group decap (see bellow the output example)
• since this line is dumped every time, the regex used in parse_multicast_group will match it when the multicast group is not configured

Sample output when multicast group is not set:

no interface vxlan 1
interface vxlan 1
show running-config all interfaces vxlan 1
interface Vxlan1
   no description
   no shutdown
   default load-interval
      [output omitted]
   no vxlan multicast-group
   no vxlan controller-client 
   vxlan udp-port 4789
      [output omitted]
   no vxlan multicast-group decap
   no vxlan flood step