package/busybox/config/networking/udhcp/Config.in

   1 #
   2 # For a description of the syntax of this configuration file,
   3 # see scripts/kbuild/config-language.txt.
   4 #
   5
   6 config BUSYBOX_CONFIG_UDHCPD
   7         bool "udhcp server (udhcpd)"
   8         default n
   9         help
  10           udhcpd is a DHCP server geared primarily toward embedded systems,
  11           while striving to be fully functional and RFC compliant.
  12
  13 config BUSYBOX_CONFIG_DHCPRELAY
  14         bool "dhcprelay"
  15         default n
  16         depends on BUSYBOX_CONFIG_UDHCPD
  17         help
  18           dhcprelay listens for dhcp requests on one or more interfaces
  19           and forwards these requests to a different interface or dhcp
  20           server.
  21
  22 config BUSYBOX_CONFIG_DUMPLEASES
  23         bool "Lease display utility (dumpleases)"
  24         default n
  25         depends on BUSYBOX_CONFIG_UDHCPD
  26         help
  27           dumpleases displays the leases written out by the udhcpd server.
  28           Lease times are stored in the file by time remaining in lease, or
  29           by the absolute time that it expires in seconds from epoch.
  30
  31 config BUSYBOX_CONFIG_FEATURE_UDHCPD_WRITE_LEASES_EARLY
  32         bool "Rewrite the lease file at every new acknowledge"
  33         default n
  34         depends on BUSYBOX_CONFIG_UDHCPD
  35         help
  36           If selected, udhcpd will write a new file with leases every
  37           time a new lease has been accepted, thus eliminating the need
  38           to send SIGUSR1 for the initial writing or updating. Any timed
  39           rewriting remains undisturbed
  40
  41 config BUSYBOX_CONFIG_DHCPD_LEASES_FILE
  42         string "Absolute path to lease file"
  43         default "/var/run/udhcpd.leases"
  44         depends on BUSYBOX_CONFIG_UDHCPD
  45         help
  46           udhcpd stores addresses in a lease file. This is the absolute path
  47           of the file. Normally it is safe to leave it untouched.
  48
  49 config BUSYBOX_CONFIG_UDHCPC
  50         bool "udhcp client (udhcpc)"
  51         default y
  52         help
  53           udhcpc is a DHCP client geared primarily toward embedded systems,
  54           while striving to be fully functional and RFC compliant.
  55
  56           The udhcp client negotiates a lease with the DHCP server and
  57           runs a script when a lease is obtained or lost.
  58
  59 config BUSYBOX_CONFIG_FEATURE_UDHCPC_ARPING
  60         bool "Verify that the offered address is free, using ARP ping"
  61         default n
  62         depends on BUSYBOX_CONFIG_UDHCPC
  63         help
  64           If selected, udhcpc will send ARP probes and make sure
  65           the offered address is really not in use by anyone. The client
  66           will DHCPDECLINE the offer if the address is in use,
  67           and restart the discover process.
  68
  69 config BUSYBOX_CONFIG_FEATURE_UDHCP_PORT
  70         bool "Enable '-P port' option for udhcpd and udhcpc"
  71         default n
  72         depends on BUSYBOX_CONFIG_UDHCPD || BUSYBOX_CONFIG_UDHCPC
  73         help
  74           At the cost of ~300 bytes, enables -P port option.
  75           This feature is typically not needed.
  76
  77 config BUSYBOX_CONFIG_UDHCP_DEBUG
  78         int "Maximum verbosity level for udhcp applets (0..9)"
  79         default 0
  80         range 0 9
  81         depends on BUSYBOX_CONFIG_UDHCPD || BUSYBOX_CONFIG_UDHCPC || BUSYBOX_CONFIG_DHCPRELAY
  82         help
  83           Verbosity can be increased with multiple -v options.
  84           This options controls how high it can be cranked up.
  85
  86           Bigger values result in bigger code. Levels above 1
  87           are very verbose and useful for debugging only.
  88
  89 config BUSYBOX_CONFIG_FEATURE_UDHCP_RFC3397
  90         bool "Support for RFC3397 domain search (experimental)"
  91         default y
  92         depends on BUSYBOX_CONFIG_UDHCPD || BUSYBOX_CONFIG_UDHCPC
  93         help
  94           If selected, both client and server will support passing of domain
  95           search lists via option 119, specified in RFC 3397,
  96           and SIP servers option 120, specified in RFC 3361.
  97
  98 config BUSYBOX_CONFIG_UDHCPC_DEFAULT_SCRIPT
  99         string "Absolute path to config script"
 100         default "/usr/share/udhcpc/default.script"
 101         depends on BUSYBOX_CONFIG_UDHCPC
 102         help
 103           This script is called after udhcpc receives an answer. See
 104           examples/udhcp for a working example. Normally it is safe
 105           to leave this untouched.
 106
 107 config BUSYBOX_CONFIG_UDHCPC_SLACK_FOR_BUGGY_SERVERS
 108         int "DHCP options slack buffer size"
 109         default 80
 110         range 0 924
 111         depends on BUSYBOX_CONFIG_UDHCPD || BUSYBOX_CONFIG_UDHCPC
 112         help
 113           Some buggy DHCP servers send DHCP offer packets with option
 114           field larger than we expect (which might also be considered a
 115           buffer overflow attempt). These packets are normally discarded.
 116           If circumstances beyond your control force you to support such
 117           servers, this may help. The upper limit (924) makes dhcpc accept
 118           even 1500 byte packets (maximum-sized ethernet packets).
 119
 120           This option does not make dhcp[cd] emit non-standard
 121           sized packets.
 122
 123           Known buggy DHCP servers:
 124           3Com OfficeConnect Remote 812 ADSL Router:
 125             seems to confuse maximum allowed UDP packet size with
 126             maximum size of entire IP packet, and sends packets which are
 127             28 bytes too large.
 128           Seednet (ISP) VDSL: sends packets 2 bytes too large.