Hi all,

I tested the ng_fec module from http://www.freebsd.org/~wpaul/FEC
and I think I found an error in implementation from 4.x.

There is a difference between 4.x and 5.x version of netgraph/ng_fec.c at
line 313(312)
in manipulation with reffernce counts:

313c312
<       ng_units_in_use++;
---
>       ng_units_in_use--;

Could someone please try comment what is correct (5.x seems to be right) ?

Also could this be possible cause of panics when one of the underlaying
interfaces
was shut down using 'ifconfig fxp0 down' ? (it seems to work after change to
decrement in 4.x version).

        Thanks in advance,
        Milon
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