openwrt/package/network/ipv6/odhcp6c/files/dhcpv6.sh
Hans Dedecker 8d2171e469 odhcp6c: add option "keep_ra_dnslifetime"
Add option keep_ra_dnslifetime which will preserve the received
lifetime for RDNSS and DNSSL RA records and not overwrite it
by the RA router lifetime as specified in RFC6106.
This allows to accept RDNNS records from RAs that don't announce
a default route by setting router lifetime to 0 in the RAs.

Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
2017-01-09 13:28:22 +01:00

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#!/bin/sh
. /lib/functions.sh
. ../netifd-proto.sh
init_proto "$@"
proto_dhcpv6_init_config() {
renew_handler=1
proto_config_add_string 'reqaddress:or("try","force","none")'
proto_config_add_string 'reqprefix:or("auto","no",range(0, 64))'
proto_config_add_string clientid
proto_config_add_string 'reqopts:list(uinteger)'
proto_config_add_string 'noslaaconly:bool'
proto_config_add_string 'forceprefix:bool'
proto_config_add_string 'extendprefix:bool'
proto_config_add_string 'norelease:bool'
proto_config_add_string 'ip6prefix:ip6addr'
proto_config_add_string iface_dslite
proto_config_add_string zone_dslite
proto_config_add_string iface_map
proto_config_add_string zone_map
proto_config_add_string iface_464xlat
proto_config_add_string zone_464xlat
proto_config_add_string zone
proto_config_add_string 'ifaceid:ip6addr'
proto_config_add_string "userclass"
proto_config_add_string "vendorclass"
proto_config_add_boolean delegate
proto_config_add_int "soltimeout"
proto_config_add_boolean fakeroutes
proto_config_add_boolean sourcefilter
proto_config_add_boolean keep_ra_dnslifetime
}
proto_dhcpv6_setup() {
local config="$1"
local iface="$2"
local reqaddress reqprefix clientid reqopts noslaaconly forceprefix extendprefix norelease ip6prefix iface_dslite iface_map iface_464xlat ifaceid userclass vendorclass delegate zone_dslite zone_map zone_464xlat zone soltimeout fakeroutes sourcefilter keep_ra_dnslifetime
json_get_vars reqaddress reqprefix clientid reqopts noslaaconly forceprefix extendprefix norelease ip6prefix iface_dslite iface_map iface_464xlat ifaceid userclass vendorclass delegate zone_dslite zone_map zone_464xlat zone soltimeout fakeroutes sourcefilter keep_ra_dnslifetime
# Configure
local opts=""
[ -n "$reqaddress" ] && append opts "-N$reqaddress"
[ -z "$reqprefix" -o "$reqprefix" = "auto" ] && reqprefix=0
[ "$reqprefix" != "no" ] && append opts "-P$reqprefix"
[ -n "$clientid" ] && append opts "-c$clientid"
[ "$noslaaconly" = "1" ] && append opts "-S"
[ "$forceprefix" = "1" ] && append opts "-F"
[ "$norelease" = "1" ] && append opts "-k"
[ -n "$ifaceid" ] && append opts "-i$ifaceid"
[ -n "$vendorclass" ] && append opts "-V$vendorclass"
[ -n "$userclass" ] && append opts "-u$userclass"
[ "$keep_ra_dnslifetime" = "1" ] && append opts "-L"
for opt in $reqopts; do
append opts "-r$opt"
done
append opts "-t${soltimeout:-120}"
[ -n "$ip6prefix" ] && proto_export "USERPREFIX=$ip6prefix"
[ -n "$iface_dslite" ] && proto_export "IFACE_DSLITE=$iface_dslite"
[ -n "$iface_map" ] && proto_export "IFACE_MAP=$iface_map"
[ -n "$iface_464xlat" ] && proto_export "IFACE_464XLAT=$iface_464xlat"
[ "$delegate" = "0" ] && proto_export "IFACE_DSLITE_DELEGATE=0"
[ "$delegate" = "0" ] && proto_export "IFACE_MAP_DELEGATE=0"
[ -n "$zone_dslite" ] && proto_export "ZONE_DSLITE=$zone_dslite"
[ -n "$zone_map" ] && proto_export "ZONE_MAP=$zone_map"
[ -n "$zone_464xlat" ] && proto_export "ZONE_464XLAT=$zone_464xlat"
[ -n "$zone" ] && proto_export "ZONE=$zone"
[ "$fakeroutes" != "0" ] && proto_export "FAKE_ROUTES=1"
[ "$sourcefilter" = "0" ] && proto_export "NOSOURCEFILTER=1"
[ "$extendprefix" = "1" ] && proto_export "EXTENDPREFIX=1"
proto_export "INTERFACE=$config"
proto_run_command "$config" odhcp6c \
-s /lib/netifd/dhcpv6.script \
$opts $iface
}
proto_dhcpv6_renew() {
local interface="$1"
# SIGUSR1 forces odhcp6c to renew its lease
local sigusr1="$(kill -l SIGUSR1)"
[ -n "$sigusr1" ] && proto_kill_command "$interface" $sigusr1
}
proto_dhcpv6_teardown() {
local interface="$1"
proto_kill_command "$interface"
}
add_protocol dhcpv6