kern/60688: npf: wrong module/config dependency for bpf filter?

["campbell+netbsd%mumble.net@localhost via gnats" <gnats-admin%NetBSD.org@localhost>]

>Number:         60688
>Category:       kern
>Synopsis:       npf: wrong module/config dependency for bpf filter?
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Sep 07 14:20:01 +0000 2026
>Originator:     Taylor R Campbell
>Release:        current, 11, 10, ...
>Organization:
The NpfBpf Dependency, Inc.
>Environment:
>Description:

	Something appears to be wrong with the module dependencies of
	npf.kmod but the details are unclear:

> Fix npf crash in kernels without "pseudo-device bpfilter".

>How-To-Repeat:

	1. build a kernel without `pseudo-device bpfilter'
	2. load npf.kmod

>Fix:

	First: The symptom should be documented so if anyone has
	stumbled upon it, they can find the symptom and learn that it
	is fixed now.

	Second: The dependencies of npf, and perhaps of bpf, should be
	clarified, if not also fixed.