Specs

link_local(prefix()) :: map() | nil

Returns a map with link-local address components for given pfx.

Returns nil if pfx is not link-local as per rfc3927 or rfc4291

Examples

iex> x = link_local("169.254.128.233")
iex> x
%{ digits: {169, 254, 128, 233},
   prefix: "169.254.0.0/16",
   ifaceID: 33001,
   address: "169.254.128.233"
}
#
iex> host(x.prefix, x.ifaceID)
"169.254.128.233"

iex> y = link_local("fe80::acdc:1976")
iex> y
%{ preamble: 1018,
   prefix: "fe80::/64",
   ifaceID: 2900105590,
   address: "fe80::acdc:1976"
}
#
iex> host(y.prefix, y.ifaceID)
"fe80::acdc:1976"