nd6hostd - Neighbor discovery and autoconfiguration daemon for IPv6 hosts
/usr/sbin/nd6hostd [-d] [-D] [-l logfile] [-u] [-n name]
-d Enables additional debugging information, such as bad packets received,
to be logged. The nd6hostd daemon remains under control of the host
that started it; therefore, an interrupt from the controlling host
stops the nd6hostd process.
-D Same as the -d option, but does not run as a daemon.
Specifies a log file into which nd6hostd writes information about its
actions. The log contains information about any changes to the routing
tables and a history of recent route change messages sent and received
that are related to changed routes.
-u Enables dynamic updates to the Domain Name System (DNS) database. Only
global unicast addresses are updated.
Specifies a fully qualified domain name to use for dynamic DNS updates.
The nd6hostd daemon receives and processes IPv6 Router Advertisement (RA)
packets of the Neighbor Discovery Protocol. This enables a system to auto-
configure itself without manual intervention.
The daemon performs the following functions, based on the contents of IPv6
Router Advertisements it receives:
+ Router discovery - Learns the IPv6 address of default routers and
installs default routes in the kernel routing table.
+ On-link prefix discovery - Learns IPv6 on-link prefixes (ranges of
IPv6 addresses that are directly reachable on a given link).
+ Stateless Address Configuration - Automatically creates and deletes
interface addresses. If the -u option is specified, nd6hostd updates
the global address information in the DNS automatically, using the
name specified with the -n option (or the host name if the the -n
option is not specified).
+ Interface attribute configuration - Automatically configures datalink
attributes such as hop limit, reachable time, retransmit time and link
The following signals have the specified effect when sent to the nd6hostd
process using the kill(1) command:
Displays internal routing tables.
Terminates nd6hostd. Before exiting, nd6hostd removes any system state
that was autoconfigured, including default routers, on-link prefixes,
IPv6 addresses, and dynamically updated DNS entries.
Do not use SIGKILL to terminate nd6hostd.
Do not run the nd6hostd and ip6rtrd daemons on the same host, as this may
produce unpredictable results.
Specifies the command path
Routes through distant and external gateways
Contains the network name database
RFC 2461, Neighbor Discovery for IP version 6 (IPv6); Narten, T., Nordmark,
E., Simpson W. A., December 1998
RFC 2462, IPv6 Stateless Address Autoconfiguration; Thompson, S., Narten,
T., December 1998