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Feature #8599

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IPv6 flow labels

Added by Isaac McDonald over 6 years ago. Updated over 6 years ago.

Status:
New
Priority:
Very Low
Assignee:
-
Category:
Rules / NAT
Target version:
-
Start date:
06/25/2018
Due date:
% Done:

0%

Estimated time:
Plus Target Version:
Release Notes:

Description

Here's a short list of possible uses for IPv6 flow labels in pfSense:

Windows 10 now populates IPv6 flow labels by default: [[https://blogs.technet.microsoft.com/networking/2017/07/13/core-network-stack-features-in-the-creators-update-for-windows-10/]]

Beginning with the Creators Update, outbound TCP and UDP packets over IPv6 have this field set to a hash of the 5-tuple (Src IP, Dst IP, Src Port, Dst Port). Middleboxes can use the FlowLabel field to perform ECMP for in-encapsulated native IPv6 traffic without having to parse the transport headers. This will make IPv6 only datacenters doing load balancing or flow classification more efficient.

FreeBSD also includes support for IPv6 flow labels.

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