netdev - Re: [PATCH iproute2 3/4] man: ip-address: document 15-char limit for LABEL

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Date:   Fri, 29 Dec 2017 20:04:57 -0800
From:   Stephen Hemminger <stephen@...workplumber.org>
To:     Luca Boccassi <bluca@...ian.org>
Cc:     netdev@...r.kernel.org
Subject: Re: [PATCH iproute2 3/4] man: ip-address: document 15-char limit
 for LABEL

On Fri, 29 Dec 2017 23:01:24 +0100
Luca Boccassi <bluca@...ian.org> wrote:

> Trying to set a label longer than 15 characters returns an error:
>  RTNETLINK answers: Numerical result out of range
> 
> Document the limit in the manpage.
> 
> Originally reported as a Debian bug:
> 
> https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=661886
> 
> Reported-by: Gabor Kiss <kissg@....ki.iif.hu>
> Signed-off-by: Luca Boccassi <bluca@...ian.org>
> ---
>  man/man8/ip-address.8.in | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/man/man8/ip-address.8.in b/man/man8/ip-address.8.in
> index eaa179c6..e7f14533 100644
> --- a/man/man8/ip-address.8.in
> +++ b/man/man8/ip-address.8.in
> @@ -190,6 +190,7 @@ Each address may be tagged with a label string.
>  In order to preserve compatibility with Linux-2.0 net aliases,
>  this string must coincide with the name of the device or must be prefixed
>  with the device name followed by colon.
> +The maximum allowed length is 15 characters.

Since these are aliases, lets be precise:
The maximum allowed total length of label is 15 characters.