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

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