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-This module matches on the bridge port input and output devices enslaved
-to a bridge device. This module is a part of the infrastructure that enables
-a transparent bridging IP firewall and is only useful for kernel versions
-above version 2.5.44.
-.TP
-.BR --physdev-in " [!] \fIname\fP"
-Name of a bridge port via which a packet is received (only for
-packets entering the
-.BR INPUT ,
-.B FORWARD
-and
-.B PREROUTING
-chains). If the interface name ends in a "+", then any
-interface which begins with this name will match. If the packet didn't arrive
-through a bridge device, this packet won't match this option, unless '!' is used.
-.TP
-.BR --physdev-out " [!] \fIname\fP"
-Name of a bridge port via which a packet is going to be sent (for packets
-entering the
-.BR FORWARD ,
-.B OUTPUT
-and
-.B POSTROUTING
-chains). If the interface name ends in a "+", then any
-interface which begins with this name will match. Note that in the
-.BR nat " and " mangle
-.B OUTPUT
-chains one cannot match on the bridge output port, however one can in the
-.B "filter OUTPUT"
-chain. If the packet won't leave by a bridge device or it is yet unknown what
-the output device will be, then the packet won't match this option, unless
-'!' is used.
-.TP
-.RB "[!] " --physdev-is-in
-Matches if the packet has entered through a bridge interface.
-.TP
-.RB "[!] " --physdev-is-out
-Matches if the packet will leave through a bridge interface.
-.TP
-.RB "[!] " --physdev-is-bridged
-Matches if the packet is being bridged and therefore is not being routed.
-This is only useful in the FORWARD and POSTROUTING chains.