Re: [B.A.T.M.A.N.] [PATCHv2 2/2] batman-adv: Snoop DHCPACKs for DAT

Linus Lüssing
2016-07-07T13:40:52Z

On Thu, Jul 07, 2016 at 12:14:42PM +0200, Linus Lüssing wrote:
> Hi Antonio,
>
> > have you tried applying this patch on one of your servers and measure the local
> > effect? (i.e. if the number of BRD ARP req is reduced or not?)
>
> I had queried Martin Weinelt just yesterday, they will test it on
> a 500 nodes compat-v15 setup soon :).

Unfortunately, looks like this patch has no effect regarding the
ARP Request overhead. According to batctl log, DHCPACKs are
snooped, but still 84.3% of all ARP Requests come from the three
DHCP servers / gateways.

These ARP Requests come encapsulated in a batman-adv broadcast
packet type.

Hm, anyone having another idea what might still be causing these
ARP Requests?

Cheers, Linus