net/mpd5: proxy arp don't work on FreeBSD 8

[Bernd Walter]

On Tue, Mar 02, 2010 at 06:07:21PM -0800, Li, Qing wrote:
> This topic has come up quite a few times. Please search into the ML
> archive
> (as recent as 2 weeks ago) and read about the details.

Sorry about this.
I just responded to another ones mail and didn't search.

> > I get an ugly error message on current, but at least it setups the
> > address:
> > [98]chipmunk.cicely.de# arp -an
> > ? (10.1.1.9) at 00:1c:c0:94:2c:d7 on vlan0 expires in 1016 seconds
> > [vlan]
> > ? (10.1.1.38) at 00:0e:42:02:00:42 on vlan0 permanent [vlan]
> > ? (10.1.1.4) at 00:0e:42:02:00:21 on vlan0 expires in 1076 seconds
> > [vlan]
> > ? (10.1.1.16) at 00:1c:c0:30:16:a1 on vlan0 expires in 1195 seconds
> > [vlan]
> > [99]chipmunk.cicely.de# arp -S 10.1.1.179 0:e:42:2:0:42 pub
> > arp: writing to routing socket: Invalid argument
> >
> 
>   The error message is correct.  Your current ARP table does not
>   contain an entry for 10.1.1.179.  The "-S" tries to delete that
>   entry first and cannot find it, so gives the error.

Ok - this explains the "delete: cannot locate 10.1.1.179" below,
which is very descriptive.
Here it is the same eror in the same program - can we get the same
message?

> <SNIP>
> 
> > 
> > But with a route added for this IP arp fails completely:
> > [104]chipmunk.cicely.de# ifconfig vlan3 10.1.89.1/24
> > [105]chipmunk.cicely.de# route add 10.1.1.179/32 10.1.89.92
> > add net 10.1.1.179: gateway 10.1.1.92
> > [106]chipmunk.cicely.de# arp -S 10.1.1.179 0:e:42:2:0:42 pub
> > delete: cannot locate 10.1.1.179
> > set: proxy entry exists for non 802 device
> > Exit 1
> >
> 
>   Since you added a host route, you need to supply the keyword
>   "only" when adding a proxy-arp entry. As in
> 
>   "arp -S 10.1.1.179 0:e:42:2:0:42 pub only"

[87]chipmunk.cicely.de# arp -an
? (10.1.1.9) at 00:1c:c0:94:2c:d7 on vlan0 expires in 1078 seconds [vlan]
? (10.1.1.38) at 00:0e:42:02:00:50 on vlan0 permanent [vlan]
? (10.1.1.4) at 00:0e:42:02:00:21 on vlan0 expires in 1011 seconds [vlan]
? (10.1.1.16) at 00:1c:c0:30:16:a1 on vlan0 expires in 1187 seconds [vlan]
[88]chipmunk.cicely.de# ifconfig vlan3 10.1.89.1/24
[89]chipmunk.cicely.de# route add 10.1.1.179/32 10.1.89.92
add net 10.1.1.179: gateway 10.1.89.92
[90]chipmunk.cicely.de# arp -S 10.1.1.179 0:e:42:2:0:50 pub only
delete: cannot locate 10.1.1.179
set: proxy entry exists for non 802 device
Exit 1
[91]chipmunk.cicely.de# arp -an
? (10.1.89.1) at 00:0e:42:02:00:50 on vlan3 permanent [vlan]
? (10.1.1.9) at 00:1c:c0:94:2c:d7 on vlan0 expires in 1174 seconds [vlan]
? (10.1.1.38) at 00:0e:42:02:00:50 on vlan0 permanent [vlan]
? (10.1.1.4) at 00:0e:42:02:00:21 on vlan0 expires in 965 seconds [vlan]
? (10.1.1.16) at 00:1c:c0:30:16:a1 on vlan0 expires in 1200 seconds [vlan]

Still the same.

PS: don't be surprised that the MAC is different - I changed the
hardware, but it is the same boot media on the same board type.

-- 
B.Walter <bernd at bwct.de> http://www.bwct.de
Modbus/TCP Ethernet I/O Baugruppen, ARM basierte FreeBSD Rechner uvm.