Transparent bridge, the rule IPFW 'in' don't match incoming packets.

[rinat]

Hi.
System - FreeBSD 7.0-release
Two interface, work act as bridge, for filtering i use ipfw.
msk0 - outer interfase, em0 - inner interface.
Work fine about year.But recently i had discovered the problem:

i want to block tcp packets from internet address Ñ…Ñ…Ñ….Ñ…Ñ…Ñ….Ñ…Ñ…Ñ….Ñ…Ñ…Ñ… to local network 80 port.

the ipfw rule:

$cmd 00002 deny log tcp from Ñ…Ñ…Ñ….Ñ…Ñ…Ñ….Ñ…Ñ…Ñ….Ñ…Ñ…Ñ… to any 80 in via msk0

or

$cmd 00002 deny log tcp from Ñ…Ñ…Ñ….Ñ…Ñ…Ñ….Ñ…Ñ…Ñ….Ñ…Ñ…Ñ… to any 80 in recv msk0

DON'T WORK

the rule :

$cmd 00002 deny log ip from any 80 to Ñ…Ñ…Ñ….Ñ…Ñ…Ñ….Ñ…Ñ…Ñ….Ñ…Ñ…Ñ… out via msk0

or

$cmd 00002 deny log tcp from Ñ…Ñ…Ñ….Ñ…Ñ…Ñ….Ñ…Ñ…Ñ….Ñ…Ñ…Ñ… to any 80 bridged

WORK.

why?