Provided by: iproute2_4.3.0-1ubuntu3.16.04.5_amd64 bug


       ip-address - protocol address management


       ip [ OPTIONS ] address  { COMMAND | help }

       ip address { add | change | replace } IFADDR dev IFNAME [ LIFETIME ] [ CONFFLAG-LIST ]

       ip address del IFADDR dev IFNAME [ mngtmpaddr ]

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

       ip address { showdump | restore }

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

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


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


       CONFFLAG := [ home | mngtmpaddr | nodad | noprefixroute ]

       LIFETIME := [ valid_lft LFT | preferred_lft LFT ]

       LFT := [ forever | SECONDS ]


       The address is a protocol (IPv4 or IPv6) address attached to a network device. Each device
       must have at least one address to use the corresponding 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

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

   ip address add - add new protocol address.
       dev IFNAME
              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 hexadecimal halfwords separated by colons
              for IPv6. The ADDRESS may be followed by a slash and a decimal number which encodes
              the network 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

       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 LABEL
              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, deprecated) 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.

       valid_lft LFT
              the valid lifetime of this address; see section 5.5.4 of RFC 4862. When it expires,
              the address is removed by the kernel.  Defaults to forever.

       preferred_lft LFT
              the preferred lifetime of this address; see section 5.5.4 of RFC 4862. When it
              expires, the address is no longer used for new outgoing connections. Defaults to

       home   (IPv6 only) designates this address the "home address" as defined in RFC 6275.

              (IPv6 only) make the kernel manage temporary addresses created from this one as
              template on behalf of Privacy Extensions (RFC3041). For this to become active, the
              use_tempaddr sysctl setting has to be set to a value greater than zero.  The given
              address needs to have a prefix length of 64. This flag allows to use privacy
              extensions in a manually configured network, just like if stateless auto-
              configuration was active.

       nodad  (IPv6 only) do not perform Duplicate Address Detection (RFC 4862) when adding this

              Do not automatically create a route for the network prefix of the added address,
              and don't search for one to delete when removing the address. Changing an address
              to add this flag will remove the automatically added prefix route, changing it to
              remove this flag will create the prefix route automatically.

   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 IFNAME (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.

       up     only list running interfaces.

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

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

              (IPv6 only) only list addresses which are not in the process of duplicate address
              detection currently.

              (IPv6 only) only list deprecated addresses.

              (IPv6 only) only list addresses not being deprecated.

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

              (IPv6 only) only list addresses which have not failed duplicate address detection.

              (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 are unforgiving. They 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.


       ip address show
           Shows IPv4 and IPv6 addresses assigned to all network interfaces. The 'show'
           subcommand can be omitted.

       ip address show up
           Same as above except that only addresses assigned to active network interfaces are

       ip address show dev eth0
           Shows IPv4 and IPv6 addresses assigned to network interface eth0.

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

       ip address delete 2001:0db8:85a3::0370:7334/64 dev eth1
           Delete the IPv6 address added above.

       ip address flush dev eth4 scope global
           Removes all global IPv4 and IPv6 addresses from device eth4. Without 'scope global' it
           would remove all addresses including IPv6 link-local ones.




       Original Manpage by Michail Litvak <>