[j-nsp] MIP issue

[SunnyDay]

I have 1 adsl interface in the untrust zone and I have configured a loopback
with another public ip address
 
And made the adsl member of loopback group.(the loopback interface).
 
I now go to the loopback interface to configure a mip.
 
Then I configure the policy from untrust to Testing zone.
 
When I ping from the internet I see traffic on the policy logs coming in and
translated to the private address but ping fails.
 
Thanks