IP address on subinterface from same subnet...

[Alex_Kurpichev]

Hi all.

On HP-UX 11.11 I need to set IP address (10.0.3.6) on subinterface (lan0:1) from same IP subnet which address (10.0.3.5) on primary interface (lan0) from. In ARP table both addresses have same MAC address. When I send icmp-request from other host to 10.0.3.6, icmp-replay issue from 10.0.3.5.
What to do for solve this problem?
Is it possible to generate and set different virtual MAC address for subinterface?
Maybe something else?
I can't to use two different phisical interfaces.