How-To: FreeBSD Jails with VLAN

This tutorial by user sdebnath shows us how to get VLAN set up in a FreeBSD jail. See the link below for the full instructions.

This article discusses how to set up jails on a FreeBSD 11-CURRENT system utilizing VIMAGE (aka VNET) to provide a virtualized independent network stack for each jail with support for VLAN tagging.

Prerequisites

You have a machine installed with FreeBSD 11-CURRENT on ZFS.

We will be building world and kernel and using that as the base for the jails. Hence basic knowledge of FreeBSD system administration is assumed. If you’ve never compiled and installed a FreeBSD base system and kernel, this article may be hard to follow. Refer to the FreeBSD Handbook, especially chapter 8: ‘Configuring the FreeBSD Kernel’ and chapter 23: ‘Updating and Upgrading FreeBSD’.

Assumptions

Your host’s ethernet interface is em0.

Your IP network is 192.168.6.0/24 with gateway at 192.168.6.1.

The host will be assigned IP 192.168.6.66.

The guest jails will be assigned IPs in the range 192.168.6.100-254.

VLAN ID for all network interfaces will be 6.

Jails will be stored in ZFS datasets under /jail directory.

Configure the host system …