etc/rc.d/ip6addrctl

   1 #!/bin/sh
   2 #
   3 # $FreeBSD: head/libexec/rc/rc.d/ip6addrctl 320802 2017-07-08 09:28:31Z kp $
   4 #
   5
   6 # PROVIDE: ip6addrctl
   7 # REQUIRE: FILESYSTEMS
   8 # BEFORE:  NETWORKING
   9 # KEYWORD: nojail
  10
  11 . /etc/rc.subr
  12 . /etc/network.subr
  13
  14 name="ip6addrctl"
  15 desc="configure address selection policy for IPv6 and IPv4"
  16 rcvar="ip6addrctl_enable"
  17 start_cmd="ip6addrctl_start"
  18 stop_cmd="ip6addrctl_stop"
  19 extra_commands="status prefer_ipv6 prefer_ipv4"
  20 status_cmd="ip6addrctl"
  21 prefer_ipv6_cmd="ip6addrctl_prefer_ipv6"
  22 prefer_ipv4_cmd="ip6addrctl_prefer_ipv4"
  23 config_file="/etc/ip6addrctl.conf"
  24
  25 IP6ADDRCTL_CMD="/usr/sbin/ip6addrctl"
  26
  27 has_inet6() {
  28         ${SYSCTL} -q net.inet6 >/dev/null || {
  29                 warn "kernel does not support INET6"
  30                 false
  31         }
  32 }
  33
  34 ip6addrctl_prefer_ipv6()
  35 {
  36         has_inet6 || return 0
  37
  38         ${IP6ADDRCTL_CMD} flush >/dev/null 2>&1
  39         cat <<EOT | ${IP6ADDRCTL_CMD} install /dev/stdin
  40         ::1/128          50      0
  41         ::/0             40      1
  42         ::ffff:0:0/96    35      4
  43         2002::/16        30      2
  44         2001::/32         5      5
  45         fc00::/7          3     13
  46         ::/96             1      3
  47         fec0::/10         1     11
  48         3ffe::/16         1     12
  49 EOT
  50 }
  51
  52 ip6addrctl_prefer_ipv4()
  53 {
  54         has_inet6 || return 0
  55
  56         ${IP6ADDRCTL_CMD} flush >/dev/null 2>&1
  57         cat <<EOT | ${IP6ADDRCTL_CMD} install /dev/stdin
  58         ::1/128          50      0
  59         ::/0             40      1
  60         ::ffff:0:0/96   100      4
  61         2002::/16        30      2
  62         2001::/32         5      5
  63         fc00::/7          3     13
  64         ::/96             1      3
  65         fec0::/10         1     11
  66         3ffe::/16         1     12
  67 EOT
  68 }
  69
  70 ip6addrctl_start()
  71 {
  72         has_inet6 || return 0
  73
  74         # Install the policy of the address selection algorithm.
  75         case "${ip6addrctl_policy}" in
  76         [Aa][Uu][Tt][Oo])
  77                 if [ -r "${config_file}" -a -s "${config_file}" ]; then
  78                         ${IP6ADDRCTL_CMD} flush >/dev/null 2>&1
  79                         ${IP6ADDRCTL_CMD} install "${config_file}"
  80                 else
  81                         if checkyesno ipv6_enable; then
  82                                 ip6addrctl_prefer_ipv6
  83                         else
  84                                 ip6addrctl_prefer_ipv4
  85                         fi
  86                 fi
  87                 ;;
  88         ipv4_prefer)
  89                 ip6addrctl_prefer_ipv4
  90                 ;;
  91         ipv6_prefer)
  92                 ip6addrctl_prefer_ipv6
  93                 ;;
  94         [Nn][Oo][Nn][Ee])
  95                 ${IP6ADDRCTL_CMD} flush >/dev/null 2>&1
  96                 ;;
  97         *)
  98                 warn "\$ip6addrctl_policy is invalid: ${ip6addrctl_policy}. " \
  99                     " \"ipv4_prefer\" is used instead."
 100                 ip6addrctl_prefer_ipv4
 101                 ;;
 102         esac
 103
 104         if checkyesno ip6addrctl_verbose; then
 105                 echo 'Address selection policy table for IPv4 and IPv6:'
 106                 ${IP6ADDRCTL_CMD}
 107         fi
 108 }
 109
 110 ip6addrctl_stop()
 111 {
 112         has_inet6 || return 0
 113
 114         ip6addrctl flush >/dev/null 2>&1
 115 }
 116
 117 load_rc_config $name
 118 run_rc_command "$1"