NAME
ip6addrctl —
configure address
selection policy for IPv6 and IPv4
SYNOPSIS
ip6addrctl |
add prefix precedence label |
ip6addrctl |
install configfile |
DESCRIPTION
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.
EXIT STATUS
The
ip6addrctl utility exits 0 on success, and >0
if an error occurs.
SEE ALSO
Richard Draves,
Default Address Selection for IPv6,
RFC 3484.
HISTORY
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.