Patch against stable/9/etc/network.subr to add support for ipv6_addrs_IF in rc.conf(5).

network.subr_ipv6_addrs.patch.txt

Index: etc/network.subr
===================================================================
--- etc/network.subr (revision 244687)
+++ etc/network.subr	(working copy)
@@ -438,6 +438,13 @@
 		;;
 	esac
 
+	# Test for $ipv6_addrs_IF. If it exists then the
+	# interface should be configured for IPv6
+	_tmpargs=$(get_if_var $_if ipv6_addrs_IF)
+	if [ -n "${_tmpargs}" ]; then
+		return 0
+	fi
+
 	case "${ipv6_network_interfaces}" in
 	$_if|"$_if "*|*" $_if"|*" $_if "*|[Aa][Uu][Tt][Oo])
 		# True if $ifconfig_IF_ipv6 is defined.
@@ -562,6 +569,7 @@
 	fi
 
 	ifalias_up ${_if} inet6 && _ret=0
+	ipv6_addrs_common ${_if} alias && _ret=0
 	ipv6_prefix_hostid_addr_common ${_if} alias && _ret=0
 	ipv6_accept_rtadv_up ${_if} && _ret=0
 
@@ -619,6 +627,7 @@
 
 	ipv6_accept_rtadv_down ${_if} && _ret=0
 	ipv6_prefix_hostid_addr_common ${_if} -alias && _ret=0
+	ipv6_addrs_common ${_if} -alias && _ret=0
 	ifalias_down ${_if} inet6 && _ret=0
 
 	inetList="`ifconfig ${_if} | grep 'inet6 ' | tr "\n" "$_ifs"`"
@@ -684,6 +693,49 @@
 	return $_ret
 }
 
+
+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
+}
+
+
+
 # ifalias_up if af
 #	Configure aliases for network interface $if.
 #	It returns 0 if at least one alias was configured or