IP-ADDRESS(8)							       Linux							     IP-ADDRESS(8)

NAME

       ip-address - protocol address management

SYNOPSIS

       ip [ OPTIONS ] address  { COMMAND | help }

       ip address { add | del } IFADDR dev STRING

       ip address { show | flush } [ dev STRING ] [ scope SCOPE-ID ] [ to PREFIX ] [ FLAG-LIST ] [ label PATTERN ]

       IFADDR := PREFIX | ADDR peer PREFIX [ broadcast ADDR ] [ anycast ADDR ] [ label STRING ] [ scope SCOPE-ID ]

       SCOPE-ID := [ host | link | global | NUMBER ]

       FLAG-LIST := [ FLAG-LIST ] FLAG

       FLAG := [ permanent | dynamic | secondary | primary | tentative | deprecated | dadfailed | temporary ]

DESCRIPTION

       The address is a protocol (IP or IPv6) address attached to a network device.  Each device must have at least one address to use the corre-
       sponding protocol.  It is possible to have several different addresses attached to one device.  These addresses are not discriminated, so
       that the term alias is not quite appropriate for them and we do not use it in this document.

       The ip address command displays addresses and their properties, adds new addresses and deletes old ones.

   ip address add - add new protocol address.
       dev NAME
	      the name of the device to add the address to.

       local ADDRESS (default)
	      the address of the interface. The format of the address depends on the protocol. It is a dotted quad for IP and a sequence of hexa-
	      decimal halfwords separated by colons for IPv6.  The ADDRESS may be followed by a slash and a decimal number which encodes the net-
	      work prefix length.

       peer ADDRESS
	      the address of the remote endpoint for pointopoint interfaces.  Again, the ADDRESS may be followed by a slash and a decimal number,
	      encoding the network prefix length.  If a peer address is specified, the local address cannot have a prefix length.  The network
	      prefix is associated with the peer rather than with the local address.

       broadcast ADDRESS
	      the broadcast address on the interface.

	      It is possible to use the special symbols '+' and '-' instead of the broadcast address.  In this case, the broadcast address is
	      derived by setting/resetting the host bits of the interface prefix.

       label NAME
	      Each address may be tagged with a label string.  In order to preserve compatibility with Linux-2.0 net aliases, this string must
	      coincide with the name of the device or must be prefixed with the device name followed by colon.

       scope SCOPE_VALUE
	      the scope of the area where this address is valid.  The available scopes are listed in file /etc/iproute2/rt_scopes.  Predefined
	      scope values are:

		      global - the address is globally valid.

		      site - (IPv6 only) the address is site local, i.e. it is valid inside this site.

		      link - the address is link local, i.e. it is valid only on this device.

		      host - the address is valid only inside this host.

   ip address delete - delete protocol address
       Arguments: coincide with the arguments of ip addr add.  The device name is a required argument.	The rest are optional.	If no arguments
       are given, the first address is deleted.

   ip address show - look at protocol addresses
       dev NAME (default)
	      name of device.

       scope SCOPE_VAL
	      only list addresses with this scope.

       to PREFIX
	      only list addresses matching this prefix.

       label PATTERN
	      only list addresses with labels matching the PATTERN.  PATTERN is a usual shell style pattern.

       dynamic and permanent
	      (IPv6 only) only list addresses installed due to stateless address configuration or only list permanent (not dynamic) addresses.

       tentative
	      (IPv6 only) only list addresses which have not yet passed duplicate address detection.

       deprecated
	      (IPv6 only) only list deprecated addresses.

       dadfailed
	      (IPv6 only) only list addresses which have failed duplicate address detection.

       temporary
	      (IPv6 only) only list temporary addresses.

       primary and secondary
	      only list primary (or secondary) addresses.

   ip address flush - flush protocol addresses
       This command flushes the protocol addresses selected by some criteria.

       This command has the same arguments as show.  The difference is that it does not run when no arguments are given.

       Warning: This command (and other flush commands described below) is pretty dangerous.  If you make a mistake, it will not forgive it, but
       will cruelly purge all the addresses.

       With the -statistics option, the command becomes verbose. It prints out the number of deleted addresses and the number of rounds made to
       flush the address list.	If this option is given twice, ip address flush also dumps all the deleted addresses in the format described in
       the previous subsection.

EXAMPLES

       ip address show dev eth0
	   Shows the addresses assigned to network interface eth0

       ip addr add 2001:0db8:85a3::0370:7334/64 dev eth1
	   Adds an IPv6 address to network interface eth1

       ip addr flush dev eth4
	   Removes all addresses from device eth4

SEE ALSO

       ip(8)

AUTHOR

       Original Manpage by Michail Litvak <mci@owl.openwall.com>

iproute2							    20 Dec 2011 						     IP-ADDRESS(8)