[Bug 231575] [IFCONFIG(8)] group unanswered questions
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Date: Thu, 03 Jul 2025 01:40:38 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=231575
Felix Johnson <felix.the.red@gmail.com> changed:
What |Removed |Added
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CC| |felix.the.red@gmail.com
--- Comment #1 from Felix Johnson <felix.the.red@gmail.com> ---
I added review D51139 to address these questions and clarify the purpose of
interface groups in ifconfig(8).
An interface group is a label or tag that you can assign to one or more network
interfaces. These groups are tracked by the kernel and can be used for certain
administrative and programmatic purposes — primarily to refer to multiple
interfaces as a set.
Examples:
- You can use ifconfig to add/remove interfaces from named groups.
- Tools like pf(4) and routed(8) can operate on groups instead of individual
interfaces.
It is not cosmetic, but its effects depend on how it's used by other
subsystems.
There are no performance implications for being part of an interface group.
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