kern/47235: npf: port redirection does not work

[hugo%barafranca.com@localhost]

>Number:         47235
>Category:       kern
>Synopsis:       npf: port redirection does not work
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Nov 22 15:55:00 +0000 2012
>Originator:     Hugo Silva
>Release:        6.0-STABLE
>Organization:
>Environment:
NetBSD host.net.local 6.0_STABLE NetBSD 6.0_STABLE (XEN_NETBSD_FIREWALL) #4: 
Thu Nov 22 15:19:53 UTC 2012  
root%host.net@localhost.local:/usr/obj/sys/arch/amd64/compile/XEN_NETBSD_FIREWALL
 amd64

>Description:
See http://mail-index.netbsd.org/tech-net/2012/11/21/msg003751.html
>How-To-Repeat:
Apply configuration and attempt to establish a connection to the target port.
>Fix: