Web Hosting Talk : Web Hosting Main Forums : Dedicated Server : Cobalt Raq XTR loopback alias responds to arps??

[fyue]

I posted this to the Technical issues forum, but maybe I can get a better cross-section of readers who can help me out:

I have a Sun Cobalt RAQ XTR running Linux where the loopback interface configured for direct server return (load balancing) responds to arps. I have tried using the -arp flag to no avail. Any suggestions on how to disable the arp for the loopback when the virtual IP address is in the same subnet as the real address? Thanks!

-Frank

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Cobalt Linux release 6.5.1 (Monterey)
Kernel 2.2.16C37_V on an i686

[root admin]# /sbin/ifconfig -a
eth0 Link encap:Ethernet HWaddr 00:10:E0:04:B1:E9
inet addr:192.168.1.250 Bcast:192.168.1.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:2692 errors:0 dropped:0 overruns:0 frame:0
TX packets:919 errors:62 dropped:0 overruns:0 carrier:0
collisions:74 txqueuelen:100
Interrupt:5 Base address:0x8000

eth0:0 Link encap:Ethernet HWaddr 00:10:E0:04:B1:E9
inet addr:192.168.1.251 Bcast:192.168.1.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
Interrupt:5 Base address:0x8000

eth1 Link encap:Ethernet HWaddr 00:10:E0:04:B1:E8
BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
Interrupt:9 Base address:0x8100

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:3924 Metric:1
RX packets:230 errors:0 dropped:0 overruns:0 frame:0
TX packets:230 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0

lo:0 Link encap:Local Loopback
inet addr:192.168.1.252 Mask:255.255.255.255
UP LOOPBACK RUNNING MTU:3924 Metric:1

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C:\Documents and Settings\Frank>ping 192.168.1.252

Pinging 192.168.1.252 with 32 bytes of data:

Reply from 192.168.1.252: bytes=32 time<1ms TTL=255
Reply from 192.168.1.252: bytes=32 time<1ms TTL=255
Reply from 192.168.1.252: bytes=32 time<1ms TTL=255
Reply from 192.168.1.252: bytes=32 time<1ms TTL=255

C:\Documents and Settings\Frank>arp -a

Interface: 192.168.1.100 --- 0x10005
Internet Address Physical Address Type
192.168.1.1 00-06-25-6c-b1-2f dynamic
192.168.1.102 00-07-e9-95-cc-8c dynamic
192.168.1.250 00-10-e0-04-b1-e9 dynamic
192.168.1.252 00-10-e0-04-b1-e9 dynamic

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