Family rt-addr netlink specification

Summary

Address configuration over rtnetlink.

Operations

newaddr

Add new address

attribute-set:

addr-attrs

do:

request

attributes:

[address, label, local, cacheinfo]

deladdr

Remove address

attribute-set:

addr-attrs

do:

request

attributes:

[address, local]

getaddr

Dump address information.

attribute-set:

addr-attrs

dump:

request

attributes:

[]

reply

attributes:

[address, label, local, cacheinfo]

getmulticast

Get / dump multicast addresses. ifa-family must select the address family: AF_INET or AF_INET6 for the IP multicast groups joined on a device, AF_PACKET for the link-layer multicast addresses in the device filter. Link-layer entries added explicitly, e.g. with SIOCADDMULTI or “bridge fdb add ... self”, rather than by a protocol join are reported with the global flag set. For AF_PACKET a non-zero ifa-index restricts the dump to that device and ifa-prefixlen, ifa-flags and ifa-scope must be zero, AF_INET and AF_INET6 apply this and target-netnsid with NETLINK_GET_STRICT_CHK only.

attribute-set:

addr-attrs

fixed-header:

ifaddrmsg

do:

request

attributes:

[]

reply

attributes:

[multicast, mc-users, cacheinfo, flags, target-netnsid]

dump:

request

attributes:

[target-netnsid]

reply

attributes:

[multicast, mc-users, cacheinfo, flags, target-netnsid]

Multicast groups

• rtnlgrp-ipv4-ifaddr

• rtnlgrp-ipv6-ifaddr

Definitions

ifaddrmsg

type:

struct

members:

ifa-family (u8):

ifa-prefixlen (u8):

ifa-flags (u8):

ifa-scope (u8):

ifa-index (u32):

ifa-cacheinfo

type:

struct

members:

ifa-prefered (u32):

ifa-valid (u32):

cstamp (u32):

tstamp (u32):

ifa-flags

type:

flags

name-prefix:

ifa-f-

enum-name:

None

entries:

secondary:

nodad:

optimistic:

dadfailed:

homeaddress:

deprecated:

tentative:

permanent:

managetempaddr:

noprefixroute:

mcautojoin:

stable-privacy:

global:

Attribute sets

addr-attrs

address (binary)

display-hint:

ipv4-or-v6

local (binary)

display-hint:

ipv4-or-v6

label (string)

broadcast (u32)

byte-order:

big-endian

display-hint:

ipv4

anycast (binary)

cacheinfo (binary)

struct:

ifa-cacheinfo

multicast (binary)

flags (u32)

enum:

ifa-flags

enum-as-flags:

True

rt-priority (u32)

target-netnsid (s32)

proto (u8)

mc-users (u32)