netdev - Re: ss issue on arm not showing UDP listening ports

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Date:   Fri, 23 Feb 2018 14:58:31 +0100
From:   Guillaume Nault <g.nault@...halink.fr>
To:     jesse_cooper@...eholics.com
Cc:     Stefano Brivio <sbrivio@...hat.com>, netdev@...r.kernel.org
Subject: Re: ss issue on arm not showing UDP listening ports

On Thu, Feb 22, 2018 at 12:08:19PM -0500, jesse_cooper@...eholics.com wrote:
> 
> Quoting Guillaume Nault <g.nault@...halink.fr>:
> 
> > On Wed, Feb 21, 2018 at 07:59:24PM -0600, Jesse Cooper wrote:
> > > Thank you for the suggestions. This is on a raspberry pi 3 not sure if
> > > that fact matters. I will notify Raspbian of the issue.
> > > 
> > Does your kernel have CONFIG_INET_UDP_DIAG?
> 
> grep CONFIG_INET_UDP_DIAG kernel.config
> # CONFIG_INET_UDP_DIAG is not set
> 
> sudo modprobe udp_diag
> modprobe: FATAL: Module udp_diag not found in directory
> /lib/modules/4.9.59-v7+
> 
> Can this module be loaded after the fact? If so what is the easiest way to
> get the proper .ko file?
> 
Just recompile with CONFIG_INET_UDP_DIAG=m (or ask your distribution to
do so). That should be enough to fix the problem.