| # |
| # For a description of the syntax of this configuration file, |
| # see scripts/kbuild/config-language.txt. |
| # |
| |
| config APP_UDHCPD |
| bool "udhcp Server (udhcpd)" |
| default n |
| help |
| uDHCPd is a DHCP server geared primarily toward embedded systems, |
| while striving to be fully functional and RFC compliant. |
| |
| See http://udhcp.busybox.net for further details. |
| |
| config APP_DHCPRELAY |
| bool "dhcprelay" |
| default n |
| depends on APP_UDHCPD |
| help |
| dhcprelay listens for dhcp requests on one or more interfaces |
| and forwards these requests to a different interface or dhcp |
| server. |
| |
| config APP_DUMPLEASES |
| bool "Lease display utility (dumpleases)" |
| default n |
| depends on APP_UDHCPD |
| help |
| dumpleases displays the leases written out by the udhcpd server. |
| Lease times are stored in the file by time remaining in lease, or |
| by the absolute time that it expires in seconds from epoch. |
| |
| See http://udhcp.busybox.net for further details. |
| |
| config FEATURE_UDHCPD_WRITE_LEASES_EARLY |
| bool "Rewrite the lease file at every new acknowledge" |
| default n |
| depends on APP_UDHCPD |
| help |
| If selected, udhcpd will write a new file with leases every |
| time a new lease has been accepted, thus eleminating the need |
| to send SIGUSR1 for the initial writing, or updating. Any timed |
| rewriting remains undisturbed |
| |
| config APP_UDHCPC |
| bool "udhcp Client (udhcpc)" |
| default n |
| help |
| uDHCPc is a DHCP client geared primarily toward embedded systems, |
| while striving to be fully functional and RFC compliant. |
| |
| The udhcp client negotiates a lease with the DHCP server and |
| notifies a set of scripts when a lease is obtained or lost. |
| |
| See http://udhcp.busybox.net for further details. |
| |
| config FEATURE_UDHCPC_ARPING |
| bool "Ask udhcpc to verify that the offered address is free, using arpping" |
| default y |
| depends on APP_UDHCPC |
| help |
| If selected, udhcpc will use arpping to make sure the offered address |
| is really available. The client will DHCPDECLINE the offer if the |
| address is in use, and restart the discover process. |
| |
| |
| config FEATURE_UDHCP_DEBUG |
| bool "Compile udhcp with noisy debugging messages" |
| default n |
| depends on APP_UDHCPD || APP_UDHCPC |
| help |
| If selected, udhcpd will output extra debugging output. If using |
| this option, compile uDHCP with "-g", and do not fork the daemon to |
| the background. |
| |
| See http://udhcp.busybox.net for further details. |
| |
| config FEATURE_RFC3397 |
| bool "Support for RFC3397 domain search (experimental)" |
| default n |
| depends on APP_UDHCPD || APP_UDHCPC |
| help |
| If selected, both client and server will support passing of domain |
| search lists via option 119, specified in RFC3397. |
| |
| config UDHCPC_SLACK_FOR_BUGGY_SERVERS |
| int "DHCP options slack buffer size" |
| default 80 |
| range 0 924 |
| depends on APP_UDHCPD || APP_UDHCPC |
| help |
| Some buggy DHCP servers will send DHCP offer packets with option |
| field larger than we expect (which might also be considered a |
| buffer overflow attempt). These packets are normally discarded. |
| If circumstances beyond your control force you to support such |
| servers, this may help. The upper limit (924) makes dhcpc accept |
| even 1500 byte packets (maximum-sized ethernet packets). |
| |
| This options does not make dhcp[cd] emit non-standard |
| sized packets. |
| |
| Known buggy DHCP servers: |
| 3Com OfficeConnect Remote 812 ADSL Router: |
| seems to confuse maximum allowed UDP packet size with |
| maximum size of entire IP packet, and sends packets which are |
| 28 bytes too large. |
| Seednet (ISP) VDSL: sends packets 2 bytes too big. |
