ip6rtrd.conf - IPv6 router daemon (ip6rtrd) configuration
file
The ip6rtrd.conf file contains configuration information
that is read by the ip6rtrd daemon at initialization time.
This file contains statements that control information
sent in router advertisements and RIPng messages.
The ip6rtrd.conf file consists of structured information
for each interface in the following format: interface
interface-name {
# interface keyword-value pairs, one per line
Prefix prefix/length {
# prefix keyword-value pairs, one per line
}
Address address {
# address keyword-value pairs, one per line
} }
Comments begin with the number sign (#) and continue to
the end of the line.
Basic Interface Keywords [Toc] [Back]
The following basic keywords are defined in RFC 2461 for
IPv6 operation: Specifies the value to be placed in the
Cur Hop Limit field in the Router Advertisement messages
sent by the router. The value 0 (zero) means unspecified
(by this router). Valid values are any non-negative integer.
The default is 0. Specifies a time, in seconds, that
is placed in the Router Lifetime field in the Router
Advertisement. Valid values are between 0 or MaxRtrAdvInterval
and 9000, inclusive. The default is 1800 seconds.
Specifies a non-negative integer value to be placed in MTU
options sent by the router. The default is 0. Enables (1)
or disables (0) the setting of a flag in the "Managed
address configuration" flag field in the Router Advertisement.
The default is 0. Enables (1) or disables (0) the
setting of a flag in the "Other stateful configuration"
flag field in the Router Advertisement. The default is 0.
Specifies a time, in milliseconds, that is placed in the
Reachable Time field in Router Advertisement messages.
Valid values are between 0 and 3,600,000 (1 hour), inclusive.
The default is 0 milliseconds. Specifies a non-negative
integer value to be placed in the Retrans Timer
field in the Router Advertisement. The default is 0
(zero). Enables (yes) or disables (no) the sending of
periodic Router Advertisements and responding to Router
Solicitations. The default is yes. Specifies the maximum
time, in seconds, between sending unsolicited multicast
Router Advertisements from the interface. Valid values are
between 4 and 1800 seconds, inclusive. The default is 600
seconds. Specifies the minimum time, in seconds, between
sending unsolicited multicast Router Advertisements from
the interface. Valid values are between 3 and .75 * MaxRtrAdvInterval.
The default is 200 seconds.
Additional Interface Keywords [Toc] [Back]
The following additional interface keywords are accepted:
Enables (yes) or disables (no) the sending of the interface
link-layer address option in outgoing router
advertisements. The default is yes. Enables (yes) or disables
(no) the sending of site local prefixes in outgoing
router advertisements. The default is no. Enables (1) or
disables (0) the Poisoned Reverse algorithm as specified
in RFC 2080. The default is 1. Enables (yes) or disables
(no) participation in RIPng on the interface. If enabled,
RIPng updates are sent on the interface, and received
RIPng updates are processed as defined in RFC 2080. You
cannot specify yes for automatic tunnels (the tun0 interface).
The default is yes (except for tun0). Enables (1)
or disables (0) the Split Horizon algorithm as specified
in RFC 2080. The default is 1.
Mobility Management Keywords [Toc] [Back]
For mobility management, the following interface keywords
(defined in draft-ietf-mobileip-ipv6-13.txt) are accepted:
Specifies the maximum time, in milliseconds, allowed
between sending unsolicited multicast Router Advertisements
from the interface. The range of valid values are
from 500 milliseconds (.5 seconds) to 1500 milliseconds
(1.5 seconds). The default is 0. Specifies the minimum
time allowed between sending unsolicited multicast Router
Advertisements from the interface, in milliseconds. The
range of valid values is from 500 milliseconds (.5 seconds)
to .75 * MaxRtrAdvIntervalMsec. The default is 0.
For example, a typical configuration to support mobility
would use the following values to specify a maximum and
minimum Router Advertisement (RA) interval of .5 to 1.5
seconds: interface interface-name {
MinRtrAdvInterval 0
MinRtrAdvIntervalMsec 500
MaxRtrAdvInterval 1
MaxRtrAdvIntervalMsec 500 }
Address Prefix Information [Toc] [Back]
Each address prefix to be configured on the interface must
be defined within a prefix block that begins with the keyword
Prefix followed by the prefix and length (separated
by a slash (/)) and optionally followed by an additional
address prefix information block of keyword-value pairs.
The following address prefix keywords and values are
defined in RFC 2461: Enables (1) or disables (0) the setting
of the Autonomous Flag field in the Prefix Information
option. The default is 1. Enables (1) or disables
(0) the setting of the on-link flag field in outgoing
router advertisements. The default is 1. Specifies the
preferred lifetime of the address prefix, in seconds, to
be placed in outgoing router advertisements. The default
is 604800 seconds, or 7 days. Specifies the valid lifetime
of the address prefix, in seconds, to be placed in
outgoing router advertisements. The default is 2592000
seconds, or 30 days.
The following address prefix keywords and values are
defined in RFC 2080: Specifies a value that represents the
total cost of getting a datagram from the router to a destination.
Valid values are between 1 and 16, inclusive.
The default is 1. Specifies a integer that is assigned to
a route and must be preserved and readvertised with a
route. The default is 0.
In addition, you can specify the following address prefix
keywords: The ip6rtrd daemon will configure the advertised
prefix on the interface if ConfigureThisPrefix is
specified and set to yes, or if ConfigureThisPrefix is not
specified and AdvAutonomousFlag is set to 1.
The prefix is not auto-configured in all other
cases. Valid values are yes and no. The default
action is the action specified by AdvAutonomousFlag.
Specifies an IPv6 address to use as an offlink
route to a gateway. You can use this mechanism
to set up default routes. Enables (yes) or disables
(no) the sending of the address prefix in
routing advertisements. The default is yes.
Address Information [Toc] [Back]
Each address to be configured on the interface must be
defined within a address block that begins with the keyword
Address followed by the IPv6 address and optionally
followed by an additional address information block of
keyword-value pairs. The address value is the 128-bit IPv6
address, as follows: x:x:x:x:x:x:x:x In this format, each
x is the hexadecimal value of a 16-bit piece of the
address. An IPv6 address typically consists of a 64-bit
prefix followed by a 64-bit interface identifier.
You can specify the following address keywords and values:
Configures (yes) or unconfigures (no) the specified
address as an anycast address. The default is no. Configures
(yes) or unconfigures (no) the specified address on
the interface. The default is yes. Specifies an IPv6
address to use as an off-link route to a host. You can use
this mechanism to set up host routes.
The following address keywords and values are defined in
RFC 2080: Specifies a value that represents the total cost
of getting a datagram from the router to a destination.
Valid values are between 1 and 16, inclusive. The default
is 1. Specifies a integer that is assigned to a route and
must be preserved and readvertised with a route. The
default is 0.
Daemons: ip6rtrd(8).
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
RFC 2080, RIPng for IPv6, Malkin, G., Minnear, R. January
1997.
draft-ietf-mobileip-ipv6-15.txt, Mobility Support in IPv6,
Johnson, David B., Perkins, Charles. November 2000 delim
off
ip6rtrd.conf(4)
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