relay: RD relay between master and slave interfaces
a) support for rewriting announced DNS-server addresses in relay mode
-3. DHCPv6-support with 2 modes of operation
- server: minimalistic server mode
+2. DHCPv6-support with 2 modes of operation
+ server: stateless, stateful and PD-server mode
a) stateless and stateful address assignment
b) prefix delegation support
c) dynamic reconfiguration in case prefixes change
relay: mostly standards-compliant DHCPv6-relay
a) support for rewriting announced DNS-server addresses
-4. Proxy for Neighbor Discovery messages (solicitations and advertisments)
+3. DHCPv4-support
+ server: stateless and stateful mode
+
+4. Proxy for Neighbor Discovery messages (solicitations and advertisements)
a) support for auto-learning routes to the local routing table
b) support for marking interfaces "external" not proxying NDP for them
and only serving NDP for DAD and for traffic to the router itself
* To build DEB or RPM packages use: "make package" afterwards.
-** Server Mode **
-
-0. Server mode is used as a minimalistic alternative for full-blown servers
- like radvd or ISC DHCP if simplicity or a small footprint matter.
- Note: The master interface is unused in this mode. It should be set to '.'.
-
-1. If there are non-local addresses assigned to the slave interface when a
- router solicitation is received, said prefixes are announced automatically
- for stateless autoconfiguration and also offered via stateful DHCPv6.
- If all prefixes are bigger than /64 all but the first /64 of these prefixes
- is offered via DHCPv6-PD to downstream routers.
-
-2. If DNS servers should be announced (DHCPv6 server-mode) then a local DNS-
- proxy (e.g. dnsmasq) needs to be run on the router itself because 6relayd
- will always announce a local address as DNS-server (if not otherwise
- configured).
-
-3. odhcpd is run with the appropriate configuration.
+** Configuration **
+
+odhcpd uses a UCI configuration file in /etc/config/dhcp for configuration
+and may also receive information from ubus
+
+
+Section of type odhcpd
+
+Option Type Default Description
+legacy bool 0 Enable DHCPv4 if start but
+ no dhcpv4 option set
+leasefile string DHCP/v6 lease/hostfile
+leasetrigger string Lease trigger script
+loglevel integer 6 Syslog level priority (0-7)
+
+
+Sections of type dhcp (configure DHCP / DHCPv6 / RA / NDP service)
+
+Option Type Default Description
+interface string <name of UCI section> logical OpenWrt interface
+ifname string <resolved from logical> physical network interface
+networkid string same as ifname compat. alias for ifname
+ignore bool 0 do not serve this interface
+ unless overridden by ra, ndp,
+ dhcpv4 or dhcpv6 options
+master bool 0 is a master interface
+ for relaying
+
+ra string disabled Router Advert service
+ [disabled|server|relay|hybrid]
+dhcpv6 string disabled DHCPv6 service
+ [disabled|server|relay|hybrid]
+dhcpv4 string disabled DHCPv4 service
+ [disabled|server]
+ndp string disabled Neighbor Discovery Proxy
+ [disabled|relay|hybrid]
+
+dynamicdhcp bool 1 dynamically create leases
+ for DHCPv4 and DHCPv6
+router list <local address> Routers to announce
+ accepts IPv4 only
+dns list <local address> DNS servers to announce
+ accepts IPv4 and IPv6
+domain list <local search domain> Search domains to announce
+
+leasetime string 12h DHCPv4 address leasetime
+start integer 100 DHCPv4 pool start
+limit integer 150 DHCPv4 pool size
+
+ra_default integer 0 Override default route
+ 0: default, 1: ignore no public address, 2: ignore all
+ra_management integer 1 RA management mode
+ 0: no M-Flag but A-Flag, 1: both M and A, 2: M but not A
+ra_offlink bool 0 Announce prefixes off-link
+ra_preference string medium Route(r) preference
+ [medium|high|low]
+ndproxy_routing bool 1 Learn routes from NDP
+ndproxy_slave bool 0 NDProxy external slave
+
+
+Sections of type host (static leases)
+Option Type Default Description
+ip string IP-Address to lease
+mac string MAC-address
+duid string DUID in base16
+hostid string IPv6 host identifier
+name string Hostname
+leasetime string DHCPv4/v6 leasetime
-
-** Relay Mode **
-
-0. Relay mode is used when a /64-bit IPv6-Prefix should be distributed over
- several links / isolated layer 2 domains (e.g. if no prefix delegation
- is available). In this mode NDP (namely Router Discovery and Neighbor
- Discovery) messages and DHCPv6-messages are proxied. For DHCPv6 also
- server mode can be used instead of relaying if desired.
-
-1. When starting 6relayd it is required that the master interface - where
- IPv6-service is already provided - is configured and usable.
-
-2. If the upstream router doesn't provide or announce a DNS-service that is
- reachable in an at least site-local scope, a local DNS proxy (e.g. dnsmasq)
- needs to be run and configued on the same router where 6relayd is running.
- (This step can most likely be skipped in most environments.)
-
-3. odhcpd is run with the appropriate configuration.
projects / project / odhcpd.git / blobdiff