Document the user-controlled VLAN_MTU capability of fxp(4).

Bump .Dd accordingly.

MFC after:	3 days

share/man/man4/fxp.4

@@ -25,7 +25,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd November 24, 2004
+.Dd January 30, 2005
 .Dt FXP 4
 .Os
 .Sh NAME
@@ -68,6 +68,19 @@ For further information on configuring this device, see
 .Pp
 The
 .Nm
+driver supports reception and transmission of extended frames
+for
+.Xr vlan 4 .
+This capability of
+.Nm
+can be controlled by means of the
+.Cm vlanmtu
+parameter
+to
+.Xr ifconfig 8 .
+.Pp
+The
+.Nm
 driver also supports a special link option:
 .Bl -tag -width link0
 .It Cm link0
@@ -137,6 +150,7 @@ parameterized values to the given settings.
 .Xr netintro 4 ,
 .Xr ng_ether 4 ,
 .Xr polling 4 ,
+.Xr vlan 4 ,
 .Xr ifconfig 8
 .Sh HISTORY
 The