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1 office 1 # DO NOT EDIT. This file is generated from Config.src
2 #
3 # For a description of the syntax of this configuration file,
4 # see docs/Kconfig-language.txt.
5 #
6  
7 config BUSYBOX_CONFIG_UDHCPD
8 bool "udhcpd (21 kb)"
9 default BUSYBOX_DEFAULT_UDHCPD
10 select BUSYBOX_CONFIG_PLATFORM_LINUX
11 help
12 udhcpd is a DHCP server geared primarily toward embedded systems,
13 while striving to be fully functional and RFC compliant.
14  
15 config BUSYBOX_CONFIG_FEATURE_UDHCPD_BASE_IP_ON_MAC
16 bool "Select IP address based on client MAC"
17 default BUSYBOX_DEFAULT_FEATURE_UDHCPD_BASE_IP_ON_MAC
18 depends on BUSYBOX_CONFIG_UDHCPD
19 help
20 If selected, udhcpd will base its selection of IP address to offer
21 on the client's hardware address. Otherwise udhcpd uses the next
22 consecutive free address.
23  
24 This reduces the frequency of IP address changes for clients
25 which let their lease expire, and makes consecutive DHCPOFFERS
26 for the same client to (almost always) contain the same
27 IP address.
28  
29 config BUSYBOX_CONFIG_FEATURE_UDHCPD_WRITE_LEASES_EARLY
30 bool "Rewrite lease file at every new acknowledge"
31 default BUSYBOX_DEFAULT_FEATURE_UDHCPD_WRITE_LEASES_EARLY
32 depends on BUSYBOX_CONFIG_UDHCPD
33 help
34 If selected, udhcpd will write a new file with leases every
35 time a new lease has been accepted, thus eliminating the need
36 to send SIGUSR1 for the initial writing or updating. Any timed
37 rewriting remains undisturbed.
38  
39 config BUSYBOX_CONFIG_DHCPD_LEASES_FILE
40 string "Absolute path to lease file"
41 default BUSYBOX_DEFAULT_DHCPD_LEASES_FILE
42 depends on BUSYBOX_CONFIG_UDHCPD
43 help
44 udhcpd stores addresses in a lease file. This is the absolute path
45 of the file. Normally it is safe to leave it untouched.
46  
47 config BUSYBOX_CONFIG_DUMPLEASES
48 bool "dumpleases (5.1 kb)"
49 default BUSYBOX_DEFAULT_DUMPLEASES
50 help
51 dumpleases displays the leases written out by the udhcpd.
52 Lease times are stored in the file by time remaining in lease, or
53 by the absolute time that it expires in seconds from epoch.
54  
55 config BUSYBOX_CONFIG_DHCPRELAY
56 bool "dhcprelay (5.2 kb)"
57 default BUSYBOX_DEFAULT_DHCPRELAY
58 help
59 dhcprelay listens for DHCP requests on one or more interfaces
60 and forwards these requests to a different interface or DHCP
61 server.
62  
63 config BUSYBOX_CONFIG_UDHCPC
64 bool "udhcpc (24 kb)"
65 default BUSYBOX_DEFAULT_UDHCPC
66 select BUSYBOX_CONFIG_PLATFORM_LINUX
67 help
68 udhcpc is a DHCP client geared primarily toward embedded systems,
69 while striving to be fully functional and RFC compliant.
70  
71 The udhcp client negotiates a lease with the DHCP server and
72 runs a script when a lease is obtained or lost.
73  
74 config BUSYBOX_CONFIG_FEATURE_UDHCPC_ARPING
75 bool "Verify that the offered address is free, using ARP ping"
76 default BUSYBOX_DEFAULT_FEATURE_UDHCPC_ARPING
77 depends on BUSYBOX_CONFIG_UDHCPC
78 help
79 If selected, udhcpc will send ARP probes and make sure
80 the offered address is really not in use by anyone. The client
81 will DHCPDECLINE the offer if the address is in use,
82 and restart the discover process.
83  
84 config BUSYBOX_CONFIG_FEATURE_UDHCPC_SANITIZEOPT
85 bool "Do not pass malformed host and domain names"
86 default BUSYBOX_DEFAULT_FEATURE_UDHCPC_SANITIZEOPT
87 depends on BUSYBOX_CONFIG_UDHCPC
88 help
89 If selected, udhcpc will check some options (such as option 12 -
90 hostname) and if they don't look like valid hostnames
91 (for example, if they start with dash or contain spaces),
92 they will be replaced with string "bad" when exporting
93 to the environment.
94  
95 config BUSYBOX_CONFIG_UDHCPC_DEFAULT_SCRIPT
96 string "Absolute path to config script"
97 default BUSYBOX_DEFAULT_UDHCPC_DEFAULT_SCRIPT
98 depends on BUSYBOX_CONFIG_UDHCPC || BUSYBOX_CONFIG_UDHCPC6
99 help
100 This script is called after udhcpc receives an answer. See
101 examples/udhcp for a working example. Normally it is safe
102 to leave this untouched.
103  
104 # udhcpc6 config is inserted here:
105 config BUSYBOX_CONFIG_UDHCPC6
106 bool "udhcpc6 (21 kb)"
107 default BUSYBOX_DEFAULT_UDHCPC6 # not yet ready
108 depends on BUSYBOX_CONFIG_FEATURE_IPV6
109 help
110 udhcpc6 is a DHCPv6 client
111  
112 config BUSYBOX_CONFIG_FEATURE_UDHCPC6_RFC3646
113 bool "Support RFC 3646 (DNS server and search list)"
114 default BUSYBOX_DEFAULT_FEATURE_UDHCPC6_RFC3646
115 depends on BUSYBOX_CONFIG_UDHCPC6
116 help
117 List of DNS servers and domain search list can be requested with
118 "-O dns" and "-O search". If server gives these values,
119 they will be set in environment variables "dns" and "search".
120  
121 config BUSYBOX_CONFIG_FEATURE_UDHCPC6_RFC4704
122 bool "Support RFC 4704 (Client FQDN)"
123 default BUSYBOX_DEFAULT_FEATURE_UDHCPC6_RFC4704
124 depends on BUSYBOX_CONFIG_UDHCPC6
125 help
126 You can request FQDN to be given by server using "-O fqdn".
127  
128 config BUSYBOX_CONFIG_FEATURE_UDHCPC6_RFC4833
129 bool "Support RFC 4833 (Timezones)"
130 default BUSYBOX_DEFAULT_FEATURE_UDHCPC6_RFC4833
131 depends on BUSYBOX_CONFIG_UDHCPC6
132 help
133 You can request POSIX timezone with "-O tz" and timezone name
134 with "-O timezone".
135  
136 config BUSYBOX_CONFIG_FEATURE_UDHCPC6_RFC5970
137 bool "Support RFC 5970 (Network Boot)"
138 default BUSYBOX_DEFAULT_FEATURE_UDHCPC6_RFC5970
139 depends on BUSYBOX_CONFIG_UDHCPC6
140 help
141 You can request bootfile-url with "-O bootfile_url" and
142 bootfile-params with "-O bootfile_params".
143  
144 comment "Common options for DHCP applets"
145 depends on BUSYBOX_CONFIG_UDHCPD || BUSYBOX_CONFIG_UDHCPC || BUSYBOX_CONFIG_UDHCPC6 || BUSYBOX_CONFIG_DHCPRELAY
146  
147 config BUSYBOX_CONFIG_FEATURE_UDHCP_PORT
148 bool "Enable '-P port' option for udhcpd and udhcpc"
149 default BUSYBOX_DEFAULT_FEATURE_UDHCP_PORT
150 depends on BUSYBOX_CONFIG_UDHCPD || BUSYBOX_CONFIG_UDHCPC || BUSYBOX_CONFIG_UDHCPC6
151 help
152 At the cost of ~300 bytes, enables -P port option.
153 This feature is typically not needed.
154  
155 config BUSYBOX_CONFIG_UDHCP_DEBUG
156 int "Maximum verbosity level (0..9)"
157 default BUSYBOX_DEFAULT_UDHCP_DEBUG
158 range 0 9
159 depends on BUSYBOX_CONFIG_UDHCPD || BUSYBOX_CONFIG_UDHCPC || BUSYBOX_CONFIG_UDHCPC6 || BUSYBOX_CONFIG_DHCPRELAY
160 help
161 Verbosity can be increased with multiple -v options.
162 This option controls how high it can be cranked up.
163  
164 Bigger values result in bigger code. Levels above 1
165 are very verbose and useful for debugging only.
166  
167 config BUSYBOX_CONFIG_UDHCPC_SLACK_FOR_BUGGY_SERVERS
168 int "DHCP options slack buffer size"
169 default BUSYBOX_DEFAULT_UDHCPC_SLACK_FOR_BUGGY_SERVERS
170 range 0 924
171 depends on BUSYBOX_CONFIG_UDHCPD || BUSYBOX_CONFIG_UDHCPC
172 help
173 Some buggy DHCP servers send DHCP offer packets with option
174 field larger than we expect (which might also be considered a
175 buffer overflow attempt). These packets are normally discarded.
176 If circumstances beyond your control force you to support such
177 servers, this may help. The upper limit (924) makes udhcpc accept
178 even 1500 byte packets (maximum-sized ethernet packets).
179  
180 This option does not make udhcp[cd] emit non-standard
181 sized packets.
182  
183 Known buggy DHCP servers:
184 3Com OfficeConnect Remote 812 ADSL Router:
185 seems to confuse maximum allowed UDP packet size with
186 maximum size of entire IP packet, and sends packets
187 which are 28 bytes too large.
188 Seednet (ISP) VDSL: sends packets 2 bytes too large.
189  
190 config BUSYBOX_CONFIG_FEATURE_UDHCP_RFC3397
191 bool "Support RFC 3397 domain search options"
192 default BUSYBOX_DEFAULT_FEATURE_UDHCP_RFC3397
193 depends on BUSYBOX_CONFIG_UDHCPD || BUSYBOX_CONFIG_UDHCPC
194 help
195 If selected, both client and server will support passing of domain
196 search lists via option 119, specified in RFC 3397,
197 and SIP servers option 120, specified in RFC 3361.
198  
199 config BUSYBOX_CONFIG_FEATURE_UDHCP_8021Q
200 bool "Support 802.1Q VLAN parameters options"
201 default BUSYBOX_DEFAULT_FEATURE_UDHCP_8021Q
202 depends on BUSYBOX_CONFIG_UDHCPD || BUSYBOX_CONFIG_UDHCPC
203 help
204 If selected, both client and server will support passing of VLAN
205 ID and priority via options 132 and 133 as per 802.1Q.