ndpd(1M)
ndpd - IPv6 Neighbor Discovery daemon
As shipped in IRIX 6.5.19. Added in IRIX 6.5.19.
NAME ndpd - IPv6 Neighbor Discovery daemon SYNOPSIS /usr/etc/ndpd [-dpqrstvMO] [-I <if>] [-D <max>[/<min>[/<life>]]] [-N <n>] [-P [<invlife>]/[<deplife>]] [-T [<reachtim>]/[<retrans>]/[<hlim>]] DESCRIPTION ndpd is a daemon invoked at boot time to perform IPv6 neighbor discovery for the automatic configuration of link-local addresses and to automatically configure global addresses when router advertisements are received from an IPv6 aware router. ndpd is normally started by the network start-up script during boot and is run with the options contained in /etc/config/ndpd.options. When it starts, it first starts the neighbor discovery protocol (RFC 2461) on each interface by choosing a link-local address and sending a neighbor solication message to check that the address is unique for that interface. It also sends out router solication messages on each interface. When a router advertisment message is received, it will try and configure a global address on that interface using the prefix contained in the message. The main program supports a number of command line options to specify Neighbor Discovery routing policy and to set debug and general options. The specific options are: -d Enable debugging (exceptional conditions and dump) -D <max>[/<min>[/<life>]] Set Unsolicited Router Advertisements intervals in seconds. Default is 600 seconds. The valid range is [4,1800] seconds -I <if> Specify the default interface for link local unicast and multicast destinations. Routes to fe80::/10 and ff02::/16 will be placed on the interface named <if>. -M Set M flag (stateful configuration) in Router Advertisements -N <n> Number of Duplicate Address Detection Transmits. Overrides the default value of 1 as per the Address Configuration Specification. -O Set O flag (other stateful) in Router Advertisements -q Client mode. The daemon will receive but not send ND router advertisements. -p Don't send prefixes within router advertisements and ignore prefixes received in router advertisements. Prefixes will be determined from the interface configuration. -P [invlife]/[deplife] Set the invalid life value and the deprecated life value for announced prefixes, in seconds. The default value is 0xffffffff (infinite) -r DO NOT offer to be the default router in Router Advertisments -s Server mode. The daemon will send ND router advertisements. -t Add timestamps to all logged messages -T [<reachtim>]/[<retrans>]/[<hlim>] Set BaseReachableTime to specified value in seconds. If <reachim> is not zero then sets the BaseReachableTime to <reachim> seconds. If <retrans> is not zero then sets RetransTime to <retrans> seconds. If <hlim> is not zero, then sets the hop limit field in router advertisement messages to <hlim>. -v Enable verbose output. Logs interesting events to system loggin daemon and to console. ndpd reads additional configuration information from /etc/ndpd.conf . This file can be modified while the program is running as changes are checked before any emission or reception of packets or on reception of a HUP signal (see kill(1)). The file contains directives, one per line (with # as comment). All the IPv6 addresses and prefixes in the file must be in numeric form. No symbolic name are supported, except for the gateway directive. Each line begins with a keyword and is made of options of the form keyword key = arguments where the 'arguments' are separated by spaces. Per-interface directives are: mtu [=<mtuval>] Advertise a MTU value of <mtuval> in router advertisments. If there is no <mtuval> argument, the advertised MTU is the MTU of the interface. If <mtuval> is 0 then suppress the advertisment of MTU. rtadv=(n|y|<min>[/<max>]) Do not send (send) router advertisments. With min[/max] option, set the interval between router advertisments. flag=[MO] Set the stateful mode flags in router advertisments. M means ``use stateful configuration''. O means ``use stateful configuration, but not for addresses''. life = <dd> Set router life field in router advertisments(value in seconds). reach = <dd> Set reachable field in router advertisments (value in seconds) retrans = <dd> Set retransmit interval field in router advertisments (value in seconds). If the right hand side of <interface> = <list>, where <list> is comma- separated, there are two possibilities. If there is no keyword, the option directive is a default option. If there is an <interface> field, the option parameters apply only to the listed interfaces (the list must comma-seperated). One can use 'le*' to match all the 'leX' interfaces. The default option must be the first line in the /etc/ndpd.conf file. Prefix directive The prefix directive defines the prefixes announced in Router advertisement directives. If there is no prefix directive for an interface, the router advertisment contains the list of prefixes deduced from the address list of the interface. If there are prefix directives, the router advertisment contains the list of prefixes defined by the different prefix directives (in order). No prefix is installed in the kernel. If there is one directive of the form prefix=none, no prefix list is advertised. The possible prefix directives are: prefix = <xxx>::/<dd> Set the advertised prefix flag = [LA] Set the L and/or A flag for the prefix (the default is LA). deprec = <dd> Set the deprecated time for the prefix (value in seconds). valid = <dd> Set the validity time for the prefix (value in seconds). <if> = <interface> Specify the <interface> name on which the directive applies. This is MANDATORY. FILES /etc/config/ndpd.options Site-dependent options /etc/ndpd.conf ndpd configuration file SEE ALSO ndp(1M), ndp(7P), ipv6(7M)