Remove ARPSEND/ARPCHECK and document ARPing in BOUND.

diff --git a/client/dhclient-script.8 b/client/dhclient-script.8
index bae59b4634ed4a287f9f7a80ed00434f503b32e4..0aacc224dedeb93170d9f524f69461c9410e278c 100644 (file)
--- a/client/dhclient-script.8
+++ b/client/dhclient-script.8
@@ -61,8 +61,7 @@ When dhclient needs to invoke the client configuration script, it
 writes a shell script into /tmp which defines a variety of variables.
 In all cases, $reason is set to the name of the reason why the script
 has been invoked.   The following reasons are currently defined:
-MEDIUM, PREINIT, ARPCHECK, ARPSEND, BOUND, RENEW, REBIND, REBOOT,
-EXPIRE, FAIL and TIMEOUT.
+MEDIUM, PREINIT, BOUND, RENEW, REBIND, REBOOT, EXPIRE, FAIL and TIMEOUT.
 .PP
 .SH MEDIUM
 The DHCP client is requesting that an interface's media type
@@ -81,18 +80,6 @@ and the media type in $medium.
 If an IP alias has been declared in dhclient.conf, its address will be
 passed in $alias_ip_address, and that ip alias should be deleted from
 the interface, along with any routes to it.
-.SH ARPSEND
-The DHCP client is requesting that an address that has been offered to
-it be checked to see if somebody else is using it, by sending an ARP
-request for that address.   It's not clear how to implement this, so
-no examples exist yet.   The IP address to check is passed in
-$new_ip_address, and the interface name is passed in $interface.
-.SH ARPCHECK
-The DHCP client wants to know if a response to the ARP request send
-using ARPCHECK has been received.   If one has, the script should exit
-with a nonzero status, indicating that the offered address has already
-been requested and should be declined.   $new_ip_address and
-$interface are set as with ARPSEND.
 .SH BOUND
 The DHCP client has done an initial binding to a new address.   The
 new ip address is passed in $new_ip_address, and the interface name is
@@ -103,6 +90,13 @@ by underscores ('_') in order to make valid shell variables, and the
 variable names start with new_.   So for example, the new subnet mask
 would be passed in $new_subnet_mask.
 .PP
+Before actually configuring the address, dhclient-script should
+somehow ARP for it and exit with a nonzero status if it receives a
+reply.   In this case, the client will send a DHCPDECLINE message to
+the server and acquire a different address.   This may also be done in
+the RENEW, REBIND, or REBOOT states, but is not required, and indeed
+may not be desirable.
+.PP
 When a binding has been completed, a lot of network parameters are
 likely to need to be set up.   A new /etc/resolv.conf needs to be
 created, using the values of $new_domain_name and