package/network/ipv6/odhcp6c/files/dhcpv6.script

   1 #!/bin/sh
   2 [ -z "$2" ] && echo "Error: should be run by odhcpc6c" && exit 1
   3 . /lib/functions.sh
   4 . /lib/netifd/netifd-proto.sh
   5
   6 ipv6_conf() {
   7         echo "$3" > "/proc/sys/net/ipv6/conf/$1/$2"
   8 }
   9
  10 # RFC 6204 requires us to block forwarding until address acquisition is complete
  11 ipv6_block_forwarding() {
  12         ip6tables "-$2" forwarding_rule -o "$1" -j REJECT --reject-with no-route 2>/dev/null
  13 }
  14
  15 prepare_interface() {
  16         local device="$1"
  17
  18         ipv6_block_forwarding "$device" A
  19
  20         ipv6_conf "$device" accept_ra 2
  21         ipv6_conf "$device" forwarding 2
  22
  23         # Send RS
  24         [ -x /usr/sbin/6relayd ] && /usr/sbin/6relayd -s "$device"
  25 }
  26
  27 cleanup_interface() {
  28         local device="$1"
  29         ipv6_conf "$device" accept_ra 1
  30         ipv6_conf "$device" forwarding 1
  31         ipv6_block_forwarding "$device" D
  32 }
  33
  34 setup_interface () {
  35         local device="$1"
  36         ipv6_block_forwarding "$device" D
  37
  38         proto_init_update "*" 1
  39
  40         for dns in $RDNSS; do
  41                 proto_add_dns_server "$dns"
  42         done
  43
  44         for domain in $DOMAINS; do
  45                 proto_add_dns_search "$domain"
  46         done
  47
  48         for prefix in $PREFIXES; do
  49                 proto_add_ipv6_prefix "$prefix"
  50         done
  51
  52         proto_send_update "$INTERFACE"
  53
  54         # TODO: $SNTP_IP $SIP_IP $SNTP_FQDN $SIP_DOMAIN
  55 }
  56
  57 teardown_interface() {
  58         proto_init_update "*" 0
  59         proto_send_update "$INTERFACE"
  60 }
  61
  62 case "$2" in
  63         started)
  64                 prepare_interface "$1"
  65         ;;
  66         stopped)
  67                 cleanup_interface "$1"
  68         ;;
  69         informed|bound|updated|rebound)
  70                 setup_interface "$1"
  71         ;;
  72         unbound|timeout)
  73                 teardown_interface "$1"
  74         ;;
  75 esac
  76
  77 # user rules
  78 [ -f /etc/odhcp6c.user ] && . /etc/odhcp6c.user
  79
  80 exit 0