sudo apt install vlan

sudo modprobe 8021q
sudo vconfig add <ethernet-adapter> <vlan-id>
sudo dhclient <ethernet-adapter>.<vlan-id>

ifconfig eth0.200

sudo vconfig rem <ethernet-adapter>.<vlan-id>

git clone https://github.com/nccgroup/vlan-hopping.git

##########################################
***   Frogger - The VLAN Hopper Version 1.9  ***

***   Auto enumerates VLANs and device discovery ***
##########################################

For usage information refer to the Wiki

https://github.com/nccgroup/vlan-hopping/wiki

Running as user "root" and group "root". This could be dangerous.

[-] The following Interfaces are available

eth0:
ether

----------------------------------------------------------
[?] Enter the interface to scan from as the source
----------------------------------------------------------
eth0

[-] Now Sniffing CDP Packets on eth0 - Please wait for 90 seconds.