newbie question

[2598 [楊勝雄] <2598@xxxxxxxxxxxxx>]

I run Red Hat 6.1 linux-2.2.14-3 .0 and want to setup LVS-DR .
All my director and realservers are connected on the same hub .
When I add the second realserver ,the arp problem occuried !!

1.. When I hide the realserver's  lo  , and it still responds ?
    i.e : from realserver ping 127.0.0.1

2. Do I have to patch ipvs-0.9.12-2.2.14 first ? if not ,the arp problem can not be fixed?