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From: "gary" <guohuizou2000@sina.com>
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Date: Tue, 23 Oct 2018 11:02:37 +0800
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Subject: Re: [B.A.T.M.A.N.] alfred and batadv-vis issue
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To: 'Jonathan Haws' <jhaws@sdl.usu.edu>, sven@narfation.org
Cc: b.a.t.m.a.n@lists.open-mesh.org


Hi Jon,

Long for your fix. Thanks.

I have a doubt for the issue.
Alfred should send the info by multicast packets. So the packet's dst =
mac address should be multicast mac address.
The packet with multicast mac address should be received by all group =
member, isn't it?
Why does the mesh point need peer's mac address for sending the info?


Regards,
Gary
-----Original Message-----
From: Jonathan Haws <jhaws@sdl.usu.edu>=20
Sent: 2018=E5=B9=B410=E6=9C=8823=E6=97=A5 1:36
To: sven@narfation.org
Cc: b.a.t.m.a.n@lists.open-mesh.org; guohuizou2000@sina.com
Subject: Re: [B.A.T.M.A.N.] alfred and batadv-vis issue


On Thu, 2018-10-18 at 08:22 +0200, Sven Eckelmann wrote:
> On Donnerstag, 18. Oktober 2018 13:53:44 CEST gary wrote:
> > I setup a testbed like this.  (BBN =3D backbone node)
> >=20
> > Switch ---------->BBN1 --------------->MP1
> >         |
> > 		------->BBN2---------------->MP2
> >=20
> > MP1 and MP2 may select BBN1 or BBN2 as gateway.=20
> > On both MP1 and MP2, I enable Alfred and batadv-vis as follows:
> > alfred -i br0 -4 224.0.0.1 -m &
> > batadv-vis -i bat0 -s
>=20
> Looks like you are using the experimental IPv4 support which I don't=20
> want to actively support. So Jonathan Haws should take care of this.
>=20

I am aware of this issue, but was under the impression I was the only =
one it affected. I'm working on a fix (basically check the ARP table and =
if a record doesn't exist for the MAC then run an ARP query; if that =
query fails then report a error) and I hope to have it working soon.

> >=20
> > when I run batadv-vis again on MP1, I can't get the info from MP2.=20
> > If I ping the ip address of MP2 from MP1, MP1 will get MP2's mac=20
> > address by arp.
> > And then I run batadv-vis again, I can get the data from MP2 now.
> >=20
> > Is there any configure or method to get MP2's info without ping=20
> > test?
>=20

We have been working around this issue in the same manner as you =
describe for the time being.

Thanks,
Jon