[gentoo-server] Disable ARP

[Jeff Rooney <jtrooney@iyd.com>]

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Hi everyone,

I am trying to setup some virtual IP's on a couple of servers and keep 
running into trouble with ARP responses. What I need to do is apply an 
ip alias to the loopback interface and disable arp responses on this 
interface. I have done this a couple of different ways but with the same 
result...doesn't work =/

here is what I have done:
# ifconfig lo:1 10.10.10.116 netmask 255.255.255.255
# ifconfig lo:1 -arp

When that didn;t work I tried the iproute2 path and did:
# ip link set lo:1 arp off
# ifconfig lo:1
lo:1      Link encap:Local Loopback
          inet addr:10.1.10.116  Mask:255.255.255.255
          UP LOOPBACK RUNNING NOARP  MTU:16436  Metric:1

Everything appears to be set right, but it is still responding to arp 
requests:
# tcpdump -n | grep arp
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on eth0, link-type EN10MB (Ethernet), capture size 96 bytes
21:25:18.686611 arp who-has 10.1.10.116 tell 10.1.10.29
21:25:18.686647 arp reply 10.1.10.116 is-at 00:02:b3:e9:41:3f


This really can't be that difficult of a task, but I have to be doing 
something wrong here. Any suggestions would be greatly appreciated.
--
Jeff


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