Specs

first(prefix()) :: prefix()

Returns the first full length prefix from the set represented by pfx.

Examples

iex> first("10.10.10.1/24")
"10.10.10.0"

iex> first("acdc:1976::/32")
"acdc:1976::"

# a full address is its own this-network
iex> first({10, 10, 10, 1})
{10, 10, 10, 1}

iex> first({{10, 10, 10, 1}, 24})
{{10, 10, 10, 0}, 32}

iex> first(%Pfx{bits: <<10, 10, 10>>, maxlen: 32})
%Pfx{bits: <<10, 10, 10, 0>>, maxlen: 32}

iex> first(%Pfx{bits: <<0xacdc::16, 0x1976::16>>, maxlen: 128})
%Pfx{bits: <<0xACDC::16, 0x1976::16, 0::96>>, maxlen: 128}