The Raspberry Pi supports Virtual Local Area Networks, also known as VLANs. Not to confuse VLAN with WLAN, which stands for Wireless LAN, the VLAN is having separate logical networks over one physical wiring. It's quite exciting actually, because using VLANs, the Raspberry Pi is capable of being a router-on-a-stick. Let me dig deeper into this by explaining the terms, and the need for VLANs.