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diff --git a/extensions/libip6t_physdev.man b/extensions/libip6t_physdev.man
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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
+.B --physdev-in name
+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
+.B --physdev-out name
+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
+.B --physdev-is-in
+Matches if the packet has entered through a bridge interface.
+.TP
+.B --physdev-is-out
+Matches if the packet will leave through a bridge interface.
+.TP
+.B --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.