Subject: Re: Off-by-one error in net/8021q/vlan.c

From: Phil Karn <[email-masked]>
Date: Wed, 16 Feb 2011 07:58:09 -0800

On 2/16/11 4:51 AM, richard -rw- weinberger wrote:
> On Wed, Feb 16, 2011 at 11:58 AM, Phil Karn <[email-masked]> wrote:
>> The range check on vlan_id in register_vlan_device is off by one, and it
>> prevents the creation of a vlan interface for vlan ID 4095. (OSX allows
>> this, I checked.)
> 
> Then OSX should fix their code. 4095 is reserved.
> 

If it's reserved, then it's up to the user to reserve it.

I actually had reason to use this to fix a misconfigured host that was
using vlan 4095. This got in my way.