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Sources/odhcp6c/

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Folder src/
File CMakeLists.txt 1284 bytes
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File README 3237 bytes
File odhcp6c-example-script.sh 3585 bytes

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

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