NetBSD Problem Report #60861

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Date: Thu,  8 Oct 2026 07:45:26 +0000 (UTC)
From: joe@ns1.eloisystems.com
Reply-To: joe@ns1.eloisystems.com
To: gnats-bugs@NetBSD.org
Subject: Make NPF routing syntax more robust and easily to work with old userland
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X-From4GNATS: "joe@ns1.eloisystems.com via gnats" <gnats-admin@NetBSD.org>

>Number:         60861
>Category:       kern
>Synopsis:       Make NPF routing syntax more robust and easily to work with old userland
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Oct 08 07:50:00 +0000 2026
>Last-Modified:  Thu Oct 08 09:30:01 +0000 2026
>Originator:     Emmanuel Nyarko
>Release:        NetBSD current
>Organization:
NetBSD
>Environment:
amd64 x86_64
>Description:

In our live NPF tests with routing on NetBSD current, we realized using old userland with updated kernel sends a missing nvlist parameter to the kernel. (because we changed the nvlist identifier from "route-interface" to "interface".
 only functional when users updated both userland and kernel. 

also, we can easily avoid passing "interface" parameter in configuration.
>How-To-Repeat:

run kernel with via and via6 and dup-to not present on top of userland without via and via6 parameters userland 
>Fix:

Yes

>Audit-Trail:
From: "Emmanuel" <joe@netbsd.org>
To: gnats-bugs@gnats.NetBSD.org
Cc: 
Subject: PR/60861 CVS commit: src
Date: Thu, 8 Oct 2026 09:28:41 +0000

 Module Name:	src
 Committed By:	joe
 Date:		Thu Oct  8 09:28:41 UTC 2026

 Modified Files:
 	src/lib/npf/ext_route: npfext_route.c
 	src/sys/net/npf: npf_ext_route.c

 Log Message:
 PR kern/60861

 don't change nvlist name for the route interface,

 let old userland still be able to access it.
 also update current to use it.

 No functional change intended in current.


 To generate a diff of this commit:
 cvs rdiff -u -r1.2 -r1.3 src/lib/npf/ext_route/npfext_route.c
 cvs rdiff -u -r1.13 -r1.14 src/sys/net/npf/npf_ext_route.c

 Please note that diffs are not public domain; they are subject to the
 copyright notices on the relevant files.

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