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#!/bin/sh
[ -z "$2" ] && echo "Error: should be run by odhcpc6c" && exit 1
. /lib/functions.sh
. /lib/netifd/netifd-proto.sh
ipv6_conf() {
echo "$3" > "/proc/sys/net/ipv6/conf/$1/$2"
}
# RFC 6204 requires us to block forwarding until address acquisition is complete
ipv6_block_forwarding() {
ip6tables "-$2" forwarding_rule -o "$1" -j REJECT --reject-with no-route 2>/dev/null
}
prepare_interface() {
local device="$1"
ipv6_block_forwarding "$device" A
ipv6_conf "$device" accept_ra 2
ipv6_conf "$device" forwarding 2
# Send RS
[ -x /usr/sbin/6relayd ] && /usr/sbin/6relayd -s "$device"
}
cleanup_interface() {
local device="$1"
ipv6_conf "$device" accept_ra 1
ipv6_conf "$device" forwarding 1
ipv6_block_forwarding "$device" D
}
setup_interface () {
local device="$1"
ipv6_block_forwarding "$device" D
proto_init_update "*" 1
for dns in $RDNSS; do
proto_add_dns_server "$dns"
done
for domain in $DOMAINS; do
proto_add_dns_search "$domain"
done
for prefix in $PREFIXES; do
proto_add_ipv6_prefix "$prefix"
done
proto_send_update "$INTERFACE"
# TODO: $SNTP_IP $SIP_IP $SNTP_FQDN $SIP_DOMAIN
}
teardown_interface() {
proto_init_update "*" 0
proto_send_update "$INTERFACE"
}
case "$2" in
started)
prepare_interface "$1"
;;
stopped)
cleanup_interface "$1"
;;
informed|bound|updated|rebound)
setup_interface "$1"
;;
unbound|timeout)
teardown_interface "$1"
;;
esac
# user rules
[ -f /etc/odhcp6c.user ] && . /etc/odhcp6c.user
exit 0
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