nd6hostd(8)nd6hostd(8)NAMEnd6hostd - Neighbor discovery and autoconfiguration daemon for IPv6
hosts
SYNOPSIS
/usr/sbin/nd6hostd [-d] [-D] [-l logfile] [-u] [-n name]
OPTIONS
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. 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. 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.
DESCRIPTION
The nd6hostd daemon receives and processes IPv6 Router Advertisement
(RA) packets of the Neighbor Discovery Protocol. This enables a system
to autoconfigure 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 ker‐
nel routing table. On-link prefix discovery - Learns IPv6 on-link pre‐
fixes (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 - Automat‐
ically configures datalink attributes such as hop limit, reachable
time, retransmit time and link mtu.
Signals
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.
Note
Do not use SIGKILL to terminate nd6hostd.
RESTRICTIONS
Do not run the nd6hostd and ip6rtrd daemons on the same host, as this
may produce unpredictable results.
FILES
Specifies the command path Routes through distant and external gateways
Contains the network name database
SEE ALSO
Commands: route(8).
Daemons: ip6rtrd(8).
RFC 2461, Neighbor Discovery for IP version 6 (IPv6); Narten, T., Nord‐
mark, E., Simpson W. A., December 1998
RFC 2462, IPv6 Stateless Address Autoconfiguration; Thompson, S.,
Narten, T., December 1998
nd6hostd(8)
