#
# For a description of the syntax of this configuration file,
-# see scripts/kbuild/config-language.txt.
+# see docs/Kconfig-language.txt.
#
-INSERT
-
config UDHCPD
- bool "udhcp server (udhcpd)"
+ bool "udhcpd (21 kb)"
default y
select PLATFORM_LINUX
help
- udhcpd is a DHCP server geared primarily toward embedded systems,
- while striving to be fully functional and RFC compliant.
+ udhcpd is a DHCP server geared primarily toward embedded systems,
+ while striving to be fully functional and RFC compliant.
-config DHCPRELAY
- bool "dhcprelay"
- default y
+config FEATURE_UDHCPD_BASE_IP_ON_MAC
+ bool "Select IP address based on client MAC"
+ default n
depends on UDHCPD
help
- dhcprelay listens for dhcp requests on one or more interfaces
- and forwards these requests to a different interface or dhcp
- server.
+ If selected, udhcpd will base its selection of IP address to offer
+ on the client's hardware address. Otherwise udhcpd uses the next
+ consecutive free address.
-config DUMPLEASES
- bool "Lease display utility (dumpleases)"
- default y
- depends on 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.
+ This reduces the frequency of IP address changes for clients
+ which let their lease expire, and makes consecutive DHCPOFFERS
+ for the same client to (almost always) contain the same
+ IP address.
config FEATURE_UDHCPD_WRITE_LEASES_EARLY
- bool "Rewrite the lease file at every new acknowledge"
+ bool "Rewrite lease file at every new acknowledge"
default y
depends on UDHCPD
help
- If selected, udhcpd will write a new file with leases every
- time a new lease has been accepted, thus eliminating the need
- to send SIGUSR1 for the initial writing or updating. Any timed
- rewriting remains undisturbed.
-
-config FEATURE_UDHCPD_BASE_IP_ON_MAC
- bool "Select IP address based on client MAC"
- default n
- depends on UDHCPD
- help
- If selected, udhcpd will base its selection of IP address to offer
- on the client's hardware address. Otherwise udhcpd uses the next
- consecutive free address.
-
- This reduces the frequency of IP address changes for clients
- which let their lease expire, and makes consecutive DHCPOFFERS
- for the same client to (almost always) contain the same
- IP address.
+ If selected, udhcpd will write a new file with leases every
+ time a new lease has been accepted, thus eliminating the need
+ to send SIGUSR1 for the initial writing or updating. Any timed
+ rewriting remains undisturbed.
config DHCPD_LEASES_FILE
string "Absolute path to lease file"
default "/var/lib/misc/udhcpd.leases"
depends on UDHCPD
help
- udhcpd stores addresses in a lease file. This is the absolute path
- of the file. Normally it is safe to leave it untouched.
+ udhcpd stores addresses in a lease file. This is the absolute path
+ of the file. Normally it is safe to leave it untouched.
+
+config DUMPLEASES
+ bool "dumpleases (5.1 kb)"
+ default y
+ help
+ dumpleases displays the leases written out by the udhcpd.
+ Lease times are stored in the file by time remaining in lease, or
+ by the absolute time that it expires in seconds from epoch.
+
+config DHCPRELAY
+ bool "dhcprelay (5.2 kb)"
+ default y
+ help
+ dhcprelay listens for DHCP requests on one or more interfaces
+ and forwards these requests to a different interface or DHCP
+ server.
config UDHCPC
- bool "udhcp client (udhcpc)"
+ bool "udhcpc (24 kb)"
default y
select PLATFORM_LINUX
help
- udhcpc is a DHCP client geared primarily toward embedded systems,
- while striving to be fully functional and RFC compliant.
+ 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
- runs a script when a lease is obtained or lost.
+ The udhcp client negotiates a lease with the DHCP server and
+ runs a script when a lease is obtained or lost.
config FEATURE_UDHCPC_ARPING
bool "Verify that the offered address is free, using ARP ping"
default y
depends on UDHCPC
help
- If selected, udhcpc will send ARP probes and make sure
- the offered address is really not in use by anyone. The client
- will DHCPDECLINE the offer if the address is in use,
- and restart the discover process.
+ If selected, udhcpc will send ARP probes and make sure
+ the offered address is really not in use by anyone. The client
+ will DHCPDECLINE the offer if the address is in use,
+ and restart the discover process.
+
+config FEATURE_UDHCPC_SANITIZEOPT
+ bool "Do not pass malformed host and domain names"
+ default y
+ depends on UDHCPC
+ help
+ If selected, udhcpc will check some options (such as option 12 -
+ hostname) and if they don't look like valid hostnames
+ (for example, if they start with dash or contain spaces),
+ they will be replaced with string "bad" when exporting
+ to the environment.
+
+config UDHCPC_DEFAULT_SCRIPT
+ string "Absolute path to config script"
+ default "/usr/share/udhcpc/default.script"
+ depends on UDHCPC || UDHCPC6
+ help
+ This script is called after udhcpc receives an answer. See
+ examples/udhcp for a working example. Normally it is safe
+ to leave this untouched.
+
+# udhcpc6 config is inserted here:
+INSERT
+
+comment "Common options for DHCP applets"
+ depends on UDHCPD || UDHCPC || UDHCPC6 || DHCPRELAY
config FEATURE_UDHCP_PORT
bool "Enable '-P port' option for udhcpd and udhcpc"
default n
- depends on UDHCPD || UDHCPC
+ depends on UDHCPD || UDHCPC || UDHCPC6
help
- At the cost of ~300 bytes, enables -P port option.
- This feature is typically not needed.
+ At the cost of ~300 bytes, enables -P port option.
+ This feature is typically not needed.
config UDHCP_DEBUG
- int "Maximum verbosity level for udhcp applets (0..9)"
- default 9
+ int "Maximum verbosity level (0..9)"
+ default 2
range 0 9
- depends on UDHCPD || UDHCPC || DHCPRELAY
+ depends on UDHCPD || UDHCPC || UDHCPC6 || DHCPRELAY
help
- Verbosity can be increased with multiple -v options.
- This option controls how high it can be cranked up.
+ Verbosity can be increased with multiple -v options.
+ This option controls how high it can be cranked up.
- Bigger values result in bigger code. Levels above 1
- are very verbose and useful for debugging only.
+ Bigger values result in bigger code. Levels above 1
+ are very verbose and useful for debugging only.
-config FEATURE_UDHCP_RFC3397
- bool "Support for RFC3397 domain search (experimental)"
- default y
+config UDHCPC_SLACK_FOR_BUGGY_SERVERS
+ int "DHCP options slack buffer size"
+ default 80
+ range 0 924
depends on UDHCPD || UDHCPC
help
- If selected, both client and server will support passing of domain
- search lists via option 119, specified in RFC 3397,
- and SIP servers option 120, specified in RFC 3361.
+ Some buggy DHCP servers 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 udhcpc accept
+ even 1500 byte packets (maximum-sized ethernet packets).
+
+ This option does not make udhcp[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 large.
-config UDHCPC_DEFAULT_SCRIPT
- string "Absolute path to config script"
- default "/usr/share/udhcpc/default.script"
- depends on UDHCPC
+config FEATURE_UDHCP_RFC3397
+ bool "Support RFC 3397 domain search options"
+ default y
+ depends on UDHCPD || UDHCPC
help
- This script is called after udhcpc receives an answer. See
- examples/udhcp for a working example. Normally it is safe
- to leave this untouched.
+ If selected, both client and server will support passing of domain
+ search lists via option 119, specified in RFC 3397,
+ and SIP servers option 120, specified in RFC 3361.
-config UDHCPC_SLACK_FOR_BUGGY_SERVERS
- int "DHCP options slack buffer size"
- default 80
- range 0 924
+config FEATURE_UDHCP_8021Q
+ bool "Support 802.1Q VLAN parameters options"
+ default y
depends on UDHCPD || UDHCPC
help
- Some buggy DHCP servers 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 option 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 large.
+ If selected, both client and server will support passing of VLAN
+ ID and priority via options 132 and 133 as per 802.1Q.
projects / oweals / busybox.git / blobdiff