ip6addrctl
—
configure address selection policy for IPv6 and IPv4
ip6addrctl |
add prefix precedence
label |
ip6addrctl |
install configfile |
The ip6addrctl
utility manages the policy table of
source and destination address selection for outgoing IPv4 and IPv6 packets.
When ip6addrctl
is invoked without an argument or with
a single argument show
, it prints the content of the
policy table currently installed in the kernel.
To modify the table, the following operations are available:
add
prefix precedence label
- Add a policy entry. The prefix argument is an IPv6
prefix, which is a key for the entry. An IPv4 prefix should be specified
with an IPv6 prefix using an IPv4-mapped IPv6 address. The
precedence and label arguments
are decimal numbers, which specify the precedence and label values for the
entry, respectively. This operation should be performed without an
existing entry for the prefix.
delete
prefix
- Delete a policy entry specified by prefix, which
should be an IPv6 prefix. A corresponding entry for the prefix should have
already been installed.
flush
- Delete all existing policy entries in the kernel.
install
configfile
- Install policy entries from a configuration file named
configfile. The configuration file should contain a
set of policy entries. Each entry is specified in a single line which
contains an IPv6 prefix, a decimal precedence value, and a decimal label
value, separated with white space or tab characters. In the configuration
file, lines beginning with the pound-sign
(‘
#
’) are comments and are
ignored.
The ip6addrctl
utility exits 0 on success,
and >0 if an error occurs.
Richard Draves,
Default Address Selection for IPv6,
RFC 3484.
The ip6addrctl
utility first appeared in the KAME IPv6
protocol stack kit. The original command name was
addrselect
, but it was then renamed to the current one
so that the name would describe its function well.