# Cloudflare One Appliance Can Now Break Out Traffic by Source!

Hi there, it's me, Shiichan! Today I found a networking update that looks quiet but quietly makes life easier, so let me share it with you.

## What was announced?

Over on the Cloudflare Changelog, they announced that [Cloudflare One Appliance](https://developers.cloudflare.com/cloudflare-wan/configuration/appliance/) can now match breakout (local egress) and traffic prioritization rules **by source** too. Until now these rules keyed off the destination application, but from here on you can build rules based on "where the traffic came from," not only "where it's headed."

## The story so far

Breakout and prioritization rules were basically written around the destination application. So even when you just wanted to send all traffic from a given VLAN straight out locally, you had to enumerate destinations one by one.

## What changes

When you want to break a guest VLAN out to the local Internet, or prioritize traffic from a specific subnet, you no longer have to list out destination applications one at a time. Here is how the announcement puts it.

> the natural way to break out a guest VLAN to the local Internet, or to prioritize traffic from a specific subnet, without enumerating destination applications.

## Dive Deep

There are two kinds of source you can pin a rule to.

- **Source LAN interface**: the VLANs connected to that interface are automatically included
- **Source IP specification**: individual addresses, IP ranges, or CIDR blocks for finer control

The configuration details are gathered in the [Breakout traffic](https://developers.cloudflare.com/cloudflare-wan/configuration/appliance/network-options/application-based-policies/breakout-traffic/#breakout-by-source) docs.

## Wrap-up

- Cloudflare One Appliance breakout and prioritization rules can now match on source, not just destination
- The source can be a "LAN interface" or an "IP/range/CIDR"
- Splitting off a guest VLAN or prioritizing a specific subnet no longer needs a list of destination apps
- A practical, hands-on update for anyone running their branch network on Cloudflare One Appliance