Subject: Re: [PATCH 6/6] net: Warn when processes listen on AF_INET sockets

From: Stephen Hemminger <[email-masked]>
Date: Wed, 1 Apr 2026 08:06:57 -0700

On Wed, 01 Apr 2026 10:28:23 +0100
David Woodhouse <[email-masked]> wrote:

> > Some kernels are built without CONFIG_IPV6, so this warning would be
> > quite misleading.  
> 
> Maybe on this date next year, we could make it not possible to build
> the kernel *without* IPv6... ?

There are some government agencies that used to require that IPV6 was disabled
for security reasons. Yes they had broken old firewalls