d3a8a8b9fa
The $ip6addrctl_policy is a variable to choose a pre-defined address selection policy set by ip6addrctl(8). The keyword "ipv4_prefer" sets IPv4-preferred one described in Section 10.3, the keyword "ipv6_prefer" sets IPv6-preferred one in Section 2.1 in RFC 3484, respectively. When "AUTO" is specified, it attempts to read /etc/ip6addrctl.conf first. If it is found, it reads and installs it as a policy table. If not, either of the two pre-defined policy tables is chosen automatically according to $ipv6_activate_all_interfaces. When $ipv6_activate_all_interfaces=NO, interfaces which have no corresponding $ifconfig_IF_ipv6 is marked as IFDISABLED for security reason. The default values are ip6addrctl_policy=AUTO and ipv6_activate_all_interfaces=NO. Discussed with: ume and bz
103 lines
2.1 KiB
Bash
Executable File
103 lines
2.1 KiB
Bash
Executable File
#!/bin/sh
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#
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# $FreeBSD$
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#
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# PROVIDE: ip6addrctl
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# REQUIRE: FILESYSTEMS
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# BEFORE: netif
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# KEYWORD: nojail
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. /etc/rc.subr
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. /etc/network.subr
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name="ip6addrctl"
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rcvar=`set_rcvar`
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start_cmd="ip6addrctl_start"
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stop_cmd="ip6addrctl_stop"
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extra_commands="status prefer_ipv6 prefer_ipv4"
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status_cmd="ip6addrctl"
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prefer_ipv6_cmd="ip6addrctl_prefer_ipv6"
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prefer_ipv4_cmd="ip6addrctl_prefer_ipv4"
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config_file="/etc/ip6addrctl.conf"
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set_rcvar_obsolete ipv6_enable ipv6_activate_all_interfaces
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set_rcvar_obsolete ipv6_prefer ip6addrctl_policy
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ip6addrctl_prefer_ipv6()
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{
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afexists inet6 || return 0
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ip6addrctl flush >/dev/null 2>&1
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ip6addrctl add ::1/128 50 0
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ip6addrctl add ::/0 40 1
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ip6addrctl add 2002::/16 30 2
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ip6addrctl add ::/96 20 3
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ip6addrctl add ::ffff:0:0/96 10 4
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checkyesno ip6addrctl_verbose && ip6addrctl
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}
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ip6addrctl_prefer_ipv4()
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{
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afexists inet6 || return 0
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ip6addrctl flush >/dev/null 2>&1
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ip6addrctl add ::ffff:0:0/96 50 0
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ip6addrctl add ::1/128 40 1
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ip6addrctl add ::/0 30 2
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ip6addrctl add 2002::/16 20 3
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ip6addrctl add ::/96 10 4
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checkyesno ip6addrctl_verbose && ip6addrctl
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}
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ip6addrctl_start()
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{
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afexists inet6 || return 0
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# install the policy of the address selection algorithm.
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case "${ip6addrctl_policy}" in
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[Aa][Uu][Tt][Oo])
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if [ -r "${config_file}" -a -s "${config_file}" ]; then
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ip6addrctl flush >/dev/null 2>&1
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ip6addrctl install "${config_file}"
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checkyesno ip6addrctl_verbose && ip6addrctl
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else
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if checkyesno ipv6_activate_all_interfaces; then
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ip6addrctl_prefer_ipv6
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else
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ip6addrctl_prefer_ipv4
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fi
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fi
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;;
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ipv4_prefer)
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ip6addrctl_prefer_ipv4
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;;
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ipv6_prefer)
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ip6addrctl_prefer_ipv6
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;;
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[Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1)
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# Backward compatibility when ipv6_prefer=YES
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ip6addrctl_prefer_ipv6
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;;
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[Nn][Oo]|[Ff][Aa][Ll][Ss][Ee]|[Oo][Ff][Ff]|0)
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# Backward compatibility when ipv6_prefer=NO
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ip6addrctl_prefer_ipv4
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;;
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*)
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warn "\$ip6addrctl_policy is invalid: ${ip6addrctl_policy}. " \
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" \"ipv4_prefer\" is used instead."
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ip6addrctl_prefer_ipv4
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;;
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esac
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}
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ip6addrctl_stop()
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{
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afexists inet6 || return 0
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ip6addrctl flush >/dev/null 2>&1
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}
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load_rc_config $name
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run_rc_command "$1"
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