Openvpn - узнать адрес с помощью nsupdate | СЛУЖБА

Я попытался найти практически везде, где мог найти, чтобы выяснить, почему, казалось бы, законная установка не работает. Я пытаюсь заархивировать DDNS с помощью клиентов OpenVPN, используя --learn-address сервера OpenVPN. DNS-сервер - это bind9. Я не уверен насчет трех вещей:

• Мои серверы имен правильные?
• Почему я получаю СЕРВИС?
• Когда я пингую 587-gc2 (или 587-gc2.proxy.example.com), я получаю Name or service not known, даже если мой файл зоны в настоящее время вводится вручную.

файл зоны db.vpn в /var/lib/bind/:

$ORIGIN .
$TTL 60 ; 1 minute
proxy.example.com   IN SOA  ns4.example.com. (
    20180711 ; serial
    60         ; refresh (1 minute)
    120        ; retry (2 minutes)
    60         ; expire (1 minute)
    60         ; minimum (1 minute)
    )
NS      ns1.example.com.
NS      ns4.example.com.
$ORIGIN proxy.example.com.
$TTL 14400      ; 4 hours
587-gc2         A   172.XX.XX.26

Попытка nsupdate запрос:

Outgoing update query:
;; ->>HEADER<<- opcode: UPDATE, status: NOERROR, id:  17693
;; flags:; ZONE: 1, PREREQ: 0, UPDATE: 1, ADDITIONAL: 1
;; ZONE SECTION:
;proxy.example.com.              IN      SOA

;; UPDATE SECTION:
587-gc2.proxy.example.com. 60 IN A       172.XX.XX.26

;; TSIG PSEUDOSECTION:
keyname.         0       ANY     TSIG    hmac-md5.sig-alg.reg.int. 1531335476 300 16 TSIGSECRET 17693 NOERROR 0

Ответ сверху nsupdate запрос:

Reply from update query:
;; ->>HEADER<<- opcode: UPDATE, status: SERVFAIL, id:  17693
;; flags: qr; ZONE: 1, PREREQ: 0, UPDATE: 0, ADDITIONAL: 1
;; ZONE SECTION:
;proxy.example.com.              IN      SOA
;; TSIG PSEUDOSECTION:
SECRETKEY.          0       ANY     TSIG    hmac-md5.sig-alg.reg.int. 1531335476 300 16 TSIGSECRET 17693 NOERROR 0

полные журналы системного журнала (именованные журналы) при повторном подключении устройства

setup_system()
Creating key...
namefromtext
keycreate
reset_system()
user_interaction()
do_next_command()
message repeated 3 times: [ do_next_command()]
evaluate_update()
update_addordelete()
do_next_command()
start_update()
send_update()
Sending update to 127.0.0.1#53
show_message()
update_completed()
tsig verification successful
show_message()
Reply from update query:
;; ->>HEADER<<- opcode: UPDATE, status: SERVFAIL, id:  36239
;; flags: qr; ZONE: 1, PREREQ: 0, UPDATE: 0, ADDITIONAL: 1
;; ZONE SECTION:
;proxy.example.com.              IN      SOA
;; TSIG PSEUDOSECTION:
SECRETKEY.          0       ANY     TSIG    hmac-md5.sig-alg.reg.int. 1531416897 300 16 TSIGSECRET 36239 NOERROR 0
done_update()
reset_system()
user_interaction()
cleanup()
detach tsigkey x0x7fb6a35cf0b8
Shutting down task manager
shutdown_program()
Shutting down request manager
Destroy DST lib
Destroying request manager
Freeing the dispatchers
Shutting down dispatch manager
Destroying event
Shutting down socket manager
Shutting down timer manager
Destroying hash context
Destroying name state
Removing log context
Destroying memory context

--learn-address скрипт в / usr / local / sbin /

#!/usr/bin/php
<?php
/* 
 * This script can be passed to --learn-address of the openvpn server, it will
 * update the local bind9 server whenever an ip address is passed 
 */
// Bind9 server to update
define("NS_ADDR", "127.0.0.1");
// Domain to prepend common name to
define("DOMAIN", "proxy.example.com");
// nsupdate bin
define("NSUPDATE", "/usr/bin/nsupdate");
// Temp path
define("TMP_PATH", "/tmp/");
// Private key path
define("PRIVATE_KEY", "SECRETKEY:SECRETHASH");
// Debug
define("DEBUG", true);
function failWithError($error) {
    syslog(LOG_ERR, $error);
    exit(1);
}
function addRecordWithIP($record, $ip) {
    $domain = $record.".".DOMAIN;
    $filepath = TMP_PATH."/". __FUNCTION__."_" .rand(900, 999);
    $fh = fopen($filepath, "w");
    fwrite($fh, "server ".NS_ADDR."\n");
    fwrite($fh, "debug ".(DEBUG?'yes':'no')."\n");
    fwrite($fh, "zone ".DOMAIN."\n");
    fwrite($fh, "update add {$domain} 60 A {$ip}\n");
    fwrite($fh, "send\n");
    fclose($fh);
    $output = [];
    exec(NSUPDATE." -y ".PRIVATE_KEY." -D -v ".escapeshellarg($filepath).(DEBUG?"":" 2>&1 > /dev/null"), $output);
    if (DEBUG) {
    syslog(LOG_ERR, print_r($output, true));
    }
    // clean up
    unlink($filepath);
}
function removeRecord($record) {
    $domain = $record.".".DOMAIN;
    $filepath = TMP_PATH."/". __FUNCTION__."_" .rand(900, 999);
    $fh = fopen($filepath, "w");
    fwrite($fh, "server ".NS_ADDR."\n");
    fwrite($fh, "debug ".(DEBUG?'yes':'no')."\n");
    fwrite($fh, "zone ".DOMAIN."\n");
    fwrite($fh, "update delete {$domain}\n");
    fwrite($fh, "send\n");
    fclose($fh);
    $output = [];
    exec(NSUPDATE." -y ".PRIVATE_KEY." -v ".escapeshellarg($filepath).(DEBUG?"":" 2>&1 > /dev/null"), $output);
    if (DEBUG) {
    syslog(LOG_ERR, print_r($output, true));
    }
    // clean up
    unlink($filepath);
}
if ($argc < 3) {
    failWithError("Incorrect number of params");
}
$slashpos = strpos($argv[2], "/");
if ($slashpos !== false) {
    // Remove subnet from ip
    $argv[2] = substr($argv[2], $slashpos);
}
if (inet_pton($argv[2]) === false) {
    failWithError("{$argv[2]} is not a valid ip address");
}
switch($argv[1]) {
    case "update":
    case "add":
    if (isset($argv[3])) {
        removeRecord($argv[3]);
        addRecordWithIP($argv[3], $argv[2]);
    }
    break;
    case "remove":
    // Since openvpn only provides the ip on this request we cannot remove the 
    break;
}
// Success
exit(0);

named.conf.local в /etc/bind/:

include "/etc/bind/named.conf.log";
acl vpnnets { 172.XX.XX.XX/16; 192.168.3.0/24; };
acl ourservers { SERVERIP; };
key dhcpupdate {
  algorithm hmac-md5;
  secret "SECRETHASH";
};
view "vpn" {
        match-clients { vpnnets;ourservers; };
        recursion yes;
         zone "proxy.example.com" {
                type master;
                file "/var/cache/bind/db.vpn";
                allow-update { key SECRETKEY;};
        };
include "/etc/bind/named.conf.default-zones-vpn";
     allow-query { vpnnets;ourservers;any; };
     allow-query-cache { vpnnets;ourservers; };
     allow-recursion { vpnnets;ourservers; };
};
view "external" {
        match-clients {any;};
        recursion yes;
         zone "proxy.example.com" {
                type master;
                file "/var/cache/bind/db.vpn-external";
                allow-update { key SECRETKEY;};

        };
};

resolv.conf в /etc/:

# This file is managed by man:systemd-resolved(8). Do not edit.
#
# This is a dynamic resolv.conf file for connecting local clients directly to
# all known uplink DNS servers. This file lists all configured search domains.
#
# Third party programs must not access this file directly, but only through the
# symlink at /etc/resolv.conf. To manage man:resolv.conf(5) in a different way,
# replace this symlink by a static file or a different symlink.
#
# See man:systemd-resolved.service(8) for details about the supported modes of
# operation for /etc/resolv.conf.
nameserver 172.XX.XX.1
nameserver 169.254.169.254
search c.GOOGLEPROJECT.internal google.internal

вывод вывода с 587-gc2.proxy.example.com

; <<>> DiG 9.11.3-1ubuntu1.1-Ubuntu <<>> 587-gc2.proxy.example.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 50282
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
; COOKIE: 3e50511a4a2fe8a1f5ba4f2d5b47943d6559b3ba4abf601e (good)
;; QUESTION SECTION:
;587-gc2.proxy.example.com. IN      A
;; Query time: 46 msec
;; SERVER: 172.XX.XX.1#53(172.XX.XX.1)
;; WHEN: Thu Jul 12 12:47:41 CDT 2018
;; MSG SIZE  rcvd: 86

named / bind log при попытке полностью выкопать 587-gc2.proxy.example.com

13-Jul-2018 12:49:49.445 queries: info: client @0x7f69407fa110 172.XX.XX.1#54377 (587-gc2.proxy.example.com): view vpn: query: 587-gc2.proxy.example.com IN A +E(0)K (172.XX.XX.1)
13-Jul-2018 12:49:49.445 query-errors: info: client @0x7f69407fa110 172.XX.XX.1#54377 (587-gc2.proxy.example.com): view vpn: query failed (SERVFAIL) for 587-gc2.proxy.example.com/IN/A at ../../../bin/named/query.c:6984