ipv6_addrs_common ${_if} alias && _ret=0

ipv6_addrs_common()

{

	local _ret _if _action _ip6prefix _ip6prefixes

	local _ip6addr _prefixlen

	local _range _ip6net _ip6low _ip6high

	_ret=1

	_if=$1

	_action=$2

# get the prefixes from ipv6_addrs_IF variable

	_ip6prefixes=`get_if_var $_if ipv6_addrs_IF`

	for _ip6prefix in ${_ip6prefixes}; do

		_ip6addr=${_ip6prefix%%/*}

		_prefixlen=${_ip6prefix##*/}

		_range=${_ip6addr##*:}

		_ip6net=${_ip6addr%:*}

		_ip6low=${_range%-*}

		_ip6high=${_range#*-}

# If deleting an alias, set _prefixlen to null string.

		if [ "${_action}" = "-alias" ]; then

			_prefixlen=""

		else

			_prefixlen="prefixlen $_prefixlen"

		fi

		_ip6high=$(("0x${_ip6high}"))

		_ip6count=$(("0x${_ip6low}"))

		while [ "${_ip6count}" -le "${_ip6high}"  ]; do

            # Re-uses the _ip6addr variable from above

			_ip6addr=$(printf "%x" "${_ip6count}")

			eval "ifconfig ${_if} inet6 ${_ip6net}:${_ip6addr} ${_prefixlen} ${_action}"

			_ip6count=$((${_ip6count}+1))

			_ret=0

		done

	done

	return $_ret

}