strange behaivor ipfw2 counters

[Gregory Bond]

> 00001  3565222  1636826036 count ip from any to any in recv cp1
> 00002   384898   314601856 count ip from any to any out xmit cp1
> 00003   473872   352073912 count ip from any to any in via fxp*
> 00004  3584143  1645055815 count ip from any to any out via fxp*

> I think that some bug, when code ipfw2 was MFC'ed to 4.X.

I don't think so, these counters are pretty much what I'd expect to see if a 
client on fxp0 was FTPing through this machine.

Why do you think this is wrong?