--- choparp.8.orig	Fri Feb 13 20:28:33 2004
+++ choparp.8	Fri Feb 13 20:30:23 2004
@@ -34,7 +34,7 @@
 .Nm choparp
 .Nd cheap and omitted proxy ARP
 .Sh SYNOPSIS
-.Nm chpoarp
+.Nm choparp
 .Ar if_name mac_addr
 .Oo Fl Oc Ns Ar net_addr Ns
 .Op / Ns Ar net_mask
@@ -42,7 +42,7 @@
 .Sh DESCRIPTION
 .Pp
 .Nm choparp 
-is a easy-to-use proxy ARP daemon.
+is an easy-to-use proxy ARP daemon.
 It watches ARP request packets visible on the interface specified by argument
 .Ar if_name ,
 and sends proxy ARP reply to the sender if the ARP request queries the
@@ -52,7 +52,7 @@
 .Ar net_addr Ns / Ar net_mask .
 .Pp
 .Ar mac_addr
-is th MAC address to be published for the specified hosts.
+is the MAC address to be published for the specified hosts.
 It is normally the address of
 .Ar if_name .
 The format of
@@ -72,7 +72,7 @@
 .Dq 0x
 .Pq for example Ad 0x858a0186 .
 .Ar net_mask
-can likewise be speficied as a dotted quad or hexadecimal value,
+can likewise be specified as a dotted quad or hexadecimal value,
 or alternatively as a mask length. The following address specifications
 are therefore equivalent:
 .Bl -item -offset indent
@@ -89,6 +89,13 @@
 .Em excluded
 by preceding them with
 .Fl
+.Pp
+.Nm choparp
+uses the Berkeley Packet Filter
+.Nm bpf(4)
+and so the kernel must be compiled with support for the
+.Nm bpf
+device.
 .Sh EXAMPLES
 If you have network interface
 .Dq ne0