udhcpd: support per-client hostnames in static leases

function                                             old     new   delta
read_staticlease                                     222     299     +77
add_server_options                                    92     154     +62
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/0 up/down: 139/0)             Total: 139 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 7 insertions, 2 deletions

diff --git a/examples/udhcp/udhcpd.conf b/examples/udhcp/udhcpd.conf
index bb8774e08..df1258aaf 100644
--- a/examples/udhcp/udhcpd.conf
+++ b/examples/udhcp/udhcpd.conf
@@ -44,7 +44,7 @@ interface	eth0
 #notify_file                    # default: no script
 #notify_file    dumpleases      # useful for debugging
 
-# The following are bootp specific options
+# The following are BOOTP specific options
 # next server to use in bootstrap
 #siaddr         192.168.0.22    # default: 0.0.0.0 (none)
 # tftp server name
@@ -52,9 +52,14 @@ interface	eth0
 # tftp file to download (e.g. kernel image)
 #boot_file      /var/nfs_root   # default: none
 
+# NOTE: "boot_file FILE" and "opt bootfile FILE" are conceptually the same,
+# but "boot_file" goes into BOOTP-defined fixed-size field in the packet,
+# whereas "opt bootfile" goes into DHCP option 0x43.
+# Same for "sname HOST" and "opt tftp HOST".
+
 # Static leases map
 #static_lease 00:60:08:11:CE:4E 192.168.0.54
-#static_lease 00:60:08:11:CE:3E 192.168.0.44
+#static_lease 00:60:08:11:CE:3E 192.168.0.44 optional_hostname
 
 # The remainder of options are DHCP options and can be specified with the
 # keyword 'opt' or 'option'. If an option can take multiple items, such