1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
|
odhcp6c - Embedded DHCPv6 Client
** Abstract **
odhcp6c is a minimal DHCPv6 and RA-client for use in embedded Linux systems
especially routers. It compiles to only about 35 KB (-Os -s).
** Features **
1. IPv6 bootstrap from different environments with autodetection
a) RA only
b) RA + stateless DHCPv6
c) RA + stateful DHCPv6 (either IA_NA or IA_PD or both)
2. Handling of non-temporary addresses (IA_NA)
a) handling of valid and preferred lifetimes
b) automatic fallback to stateless or PD-only mode
3. Support for DHCPv6 extension
a) Reconfigure-Messages
b) Prefix Delegation (including handling of valid and preferred lifetimes)
c) Prefix Exclusion
d) DNS Configuration Options
e) NTP Options
f) SIP Options
g) Information-Refresh Options
h) Configurable SOL_MAX_RT
i) DS-Lite AFTR-Name Option
j) Softwire address and port mapped clients (MAP, LW4over6)
j) CER-ID (experimental)
4. Support for requesting and parsing Router Advertisements
a) parsing of prefixes, routes, MTU and RDNSS options
** Compiling **
odhcp6c uses cmake:
* To prepare a Makefile use: "cmake ."
* To build / install use: "make" / "make install" afterwards.
* To build DEB or RPM packages use: "make package" afterwards.
** State Script **
The state script is called whenever the DHCPv6 state changes.
The script is called with the following parameters: <interface> <state>
States:
* started The DHCPv6 client has been started
* bound A suitable server was found and addresses or prefixes acquired
* informed A stateless information request returned updated information
* updated Updated information was received from the DHCPv6 server
* ra-updated Updated information was received from via Router Advertisement
* rebound The DHCPv6 client switched to another server
* unbound The DHCPv6 client lost all DHCPv6 servers and will restart
* stopped The DHCPv6 client has been stopped
Environment:
* RDNSS A space-separated list of recursive DNS servers
* DOMAINS A space-separated list of DNS search domains
* SNTP_IP A space-separated list of SNTP server IP addresses
* SNTP_FQDN A space-separated list of SNTP server FQDNs
* SIP_IP A space-separated list of SIP servers
* SIP_DOMAIN A space-separated list of SIP domains
* OPTION_<num> Custom option received as base-16
* PREFIXES A space-separated list of prefixes currently assigned
Format: <prefix>/<length>,preferred,valid[,excluded=<excluded-prefix>/<length>][,class=<prefix class #>]
* ADDRESSES A space-separated list of addresses currently assigned
Format: <address>/<length>,preferred,valid
* RA_ADDRESSES A space-separated list of addresses from RA-prefixes
Format: <address>/<length>,preferred,valid
* RA_ROUTES A space-separated list of routes from the RA
Format: <address>/<length>,gateway,valid,metric
* RA_DNS A space-separated list of recursive DNS servers from the RA
* RA_DOMAINS A space-separated list of DNS search domains from the RA
* RA_HOPLIMIT Highest hop-limit received in RAs
* RA_MTU MTU-value received in RA
* RA_REACHABLE ND Reachability time
* RA_RETRANSMIT ND Retransmit time
* AFTR The DS-Lite AFTR domain name
* MAPE / MAPT / LW4O6 Softwire rules for MAPE, MAPT and LW4O6
|
