# Network Teardown The script `create_dell_vlans` can be used to pre-populate the bridges and vlan nics needed for the HaaS to operate, but right now we don't have an automated way to delete them. You shouldn't need to do this to use the HaaS, but if for some reason you want to delete the nics related to a given vlan, you can do: brctl delif br-vlan${vlan_number} em3.${vlan_number} vconfig rem em3.${vlan_number} ifconfig br-vlan${vlan_number} down brctl delbr br-vlan${vlan_number} We're using `em3` as an example; do a `brctl show` to find out what the right nic actually is.