"ip": listing of proxy ARP entries?

[Lutz Pressler <Lutz.Pressler@xxxxxxxxx>]

Hello,

I am not able to get information about manually set proxy ARP entries
with the "ip" tool (iproute2-ss010824), tested on both 2.2.19 and
2.4.8-ac7 kernels.

# ip neigh add proxy 172.20.1.1 dev eth0

The "arp" tool then yields (normal entries trimmed)
# arp -n
Address              HWtype  HWaddress           Flags Mask        Iface
192.168.1.254        ether   00:80:C8:F6:47:6F   C                 eth0
172.20.1.1           *       *                   MP                eth0

but "ip" only shows
# ip neigh show
192.168.1.254 dev eth0 lladdr 00:80:c8:f6:47:6f nud reachable

Is this expected behaviour or a (kernel) bug?

Trying different "nud" options does not help.
Inserting debugging code at the beginning of print_neigh in
iproute2/ip/ipneigh.c shows that no data is sent through the netlink
socket for proxy ARP entries.

Greetings,
  Lutz


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