c6137ba510
All other applets are listed simply by their name, no reason why dumpleases doesn't do that. Group all udhcpd feature options directly after it. Put "NOT READY" into udhcpc6 item (some users actually tried to use it, and complained). Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
164 lines
5.1 KiB
Plaintext
164 lines
5.1 KiB
Plaintext
#
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# For a description of the syntax of this configuration file,
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# see scripts/kbuild/config-language.txt.
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#
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INSERT
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config UDHCPD
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bool "udhcpd (DHCP server)"
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default y
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select PLATFORM_LINUX
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help
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udhcpd is a DHCP server geared primarily toward embedded systems,
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while striving to be fully functional and RFC compliant.
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config FEATURE_UDHCPD_WRITE_LEASES_EARLY
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bool "Rewrite the lease file at every new acknowledge"
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default y
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depends on UDHCPD
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help
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If selected, udhcpd will write a new file with leases every
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time a new lease has been accepted, thus eliminating the need
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to send SIGUSR1 for the initial writing or updating. Any timed
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rewriting remains undisturbed.
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config FEATURE_UDHCPD_BASE_IP_ON_MAC
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bool "Select IP address based on client MAC"
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default n
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depends on UDHCPD
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help
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If selected, udhcpd will base its selection of IP address to offer
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on the client's hardware address. Otherwise udhcpd uses the next
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consecutive free address.
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This reduces the frequency of IP address changes for clients
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which let their lease expire, and makes consecutive DHCPOFFERS
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for the same client to (almost always) contain the same
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IP address.
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config DHCPD_LEASES_FILE
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string "Absolute path to lease file"
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default "/var/lib/misc/udhcpd.leases"
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depends on UDHCPD
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help
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udhcpd stores addresses in a lease file. This is the absolute path
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of the file. Normally it is safe to leave it untouched.
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config DUMPLEASES
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bool "dumpleases"
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default y
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help
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dumpleases displays the leases written out by the udhcpd.
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Lease times are stored in the file by time remaining in lease, or
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by the absolute time that it expires in seconds from epoch.
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config DHCPRELAY
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bool "dhcprelay"
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default y
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help
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dhcprelay listens for dhcp requests on one or more interfaces
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and forwards these requests to a different interface or dhcp
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server.
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config UDHCPC
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bool "udhcpc (DHCP client)"
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default y
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select PLATFORM_LINUX
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help
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udhcpc is a DHCP client geared primarily toward embedded systems,
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while striving to be fully functional and RFC compliant.
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The udhcp client negotiates a lease with the DHCP server and
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runs a script when a lease is obtained or lost.
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config FEATURE_UDHCPC_ARPING
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bool "Verify that the offered address is free, using ARP ping"
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default y
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depends on UDHCPC
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help
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If selected, udhcpc will send ARP probes and make sure
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the offered address is really not in use by anyone. The client
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will DHCPDECLINE the offer if the address is in use,
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and restart the discover process.
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config FEATURE_UDHCPC_SANITIZEOPT
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bool "Do not pass malformed host and domain names"
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default y
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depends on UDHCPC
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help
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If selected, udhcpc will check some options (such as option 12 -
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hostname) and if they don't look like valid hostnames
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(for example, if they start with dash or contain spaces),
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they will be replaced with string "bad" when exporting
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to the environment.
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config UDHCPC_DEFAULT_SCRIPT
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string "Absolute path to config script"
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default "/usr/share/udhcpc/default.script"
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depends on UDHCPC
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help
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This script is called after udhcpc receives an answer. See
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examples/udhcp for a working example. Normally it is safe
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to leave this untouched.
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config FEATURE_UDHCP_PORT
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bool "Enable '-P port' option for udhcpd and udhcpc"
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default n
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depends on UDHCPD || UDHCPC
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help
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At the cost of ~300 bytes, enables -P port option.
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This feature is typically not needed.
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config UDHCP_DEBUG
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int "Maximum verbosity level for udhcp applets (0..9)"
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default 9
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range 0 9
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depends on UDHCPD || UDHCPC || DHCPRELAY
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help
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Verbosity can be increased with multiple -v options.
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This option controls how high it can be cranked up.
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Bigger values result in bigger code. Levels above 1
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are very verbose and useful for debugging only.
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config FEATURE_UDHCP_RFC3397
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bool "Support for RFC3397 domain search (experimental)"
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default y
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depends on UDHCPD || UDHCPC
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help
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If selected, both client and server will support passing of domain
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search lists via option 119, specified in RFC 3397,
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and SIP servers option 120, specified in RFC 3361.
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config FEATURE_UDHCP_8021Q
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bool "Support for 802.1Q VLAN parameters"
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default y
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depends on UDHCPD || UDHCPC
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help
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If selected, both client and server will support passing of VLAN
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ID and priority via options 132 and 133 as per 802.1Q.
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config UDHCPC_SLACK_FOR_BUGGY_SERVERS
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int "DHCP options slack buffer size"
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default 80
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range 0 924
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depends on UDHCPD || UDHCPC
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help
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Some buggy DHCP servers send DHCP offer packets with option
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field larger than we expect (which might also be considered a
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buffer overflow attempt). These packets are normally discarded.
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If circumstances beyond your control force you to support such
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servers, this may help. The upper limit (924) makes dhcpc accept
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even 1500 byte packets (maximum-sized ethernet packets).
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This option does not make dhcp[cd] emit non-standard
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sized packets.
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Known buggy DHCP servers:
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3Com OfficeConnect Remote 812 ADSL Router:
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seems to confuse maximum allowed UDP packet size with
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maximum size of entire IP packet, and sends packets which are
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28 bytes too large.
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Seednet (ISP) VDSL: sends packets 2 bytes too large.
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