I've been getting plenty of these too, and all originating from different
IPs in my ISP. Think the load balancer possibility doesn't really answer
for my case. Does anyone else have any other answers on this?
Ray

On Mon, Sep 28, 2009 at 10:25 PM, Maxim Dounin <mdounin@mdounin.ru> wrote:

> Hello!
>
> On Mon, Sep 28, 2009 at 10:07:25AM -0400, pepejose wrote:
>
> > hi
> >
> > i have several errors in my access_log
> >
> > IP _ - [28/Sep/2009:15:56:33 +0200] "-" 400 0 "-" "-" "-"
> >
> >
> > why these errors occur?
>
> These errors are "400 Bad Request", most likely just client
> connects without sending anything. Some load balancers / health
> checks known to cause a lots of these.
>
> Maxim Dounin
>
>