Re: "ip neigh show" not showing arp cache entries?

From: Chris Friesen
Date: Mon Dec 10 2007 - 12:55:36 EST


Chris Friesen wrote:

I'm seeing some strange behaviour on a 2.6.14 ppc64 system. If I run "ip neigh show" it prints out nothing, but if I run "arp" then I see the other nodes on the local network.


root@base0-0-0-5-0-11-1:/root> ip neigh show
root@base0-0-0-5-0-11-1:/root> arp -n
Address HWtype HWaddress Flags Mask Iface
172.24.132.0 ether 00:01:AF:14:E8:DA C bond0
172.24.132.1 (incomplete) bond0
172.24.136.0 ether 00:C0:8B:07:B3:7E C bond0
172.24.132.4 ether 00:01:AF:14:E8:DA C bond0
172.24.132.2 ether 00:01:AF:14:E8:DA C bond0


Any ideas what's going on here?

I've got some further information. If I look for a specific address, it seems to work:

root@base0-0-0-5-0-11-1:/root> ip neigh show 172.24.136.0
172.24.136.0 dev bond0 lladdr 00:c0:8b:07:b3:7e REACHABLE


In the above scenario, the arp cache lists the device as reachable via bond0. If I search the arp cache to see whether the address is reachable from one of bond0's slave devices, should it come back positive or negative?

Chris
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