bind9 geoip不能正常工作

Question

bind9 9 bind-9.17.2是从debian-9上的源代码编译的。

./named -V
BIND 9.17.2 (Development Release) 
running on Linux x86_64 4.9.0-6-amd64 #1 SMP Debian 4.9.88-1+deb9u1 (2018-05-07)
built by make with  '--with-maxminddb' '--prefix=/usr' '--enable-fixed-rrset' '--sysconfdir=/etc/bind'
compiled by GCC 6.3.0 20170516
compiled with OpenSSL version: OpenSSL 1.1.0l  10 Sep 2019
linked to OpenSSL version: OpenSSL 1.1.0l  10 Sep 2019
compiled with zlib version: 1.2.8
linked to zlib version: 1.2.8
linked to maxminddb version: 1.2.0
threads support is enabled

default paths:
  named configuration:  /etc/bind/named.conf
  rndc configuration:   /etc/bind/rndc.conf
  DNSSEC root key:      /etc/bind/bind.keys
  nsupdate session key: /usr/var/run/named/session.key
  named PID file:       /usr/var/run/named/named.pid
  named lock file:      /usr/var/run/named/named.lock
  geoip-directory:      /usr/share/GeoIP

其主要目标是使用其GeoIP特性，并根据解析器(S) IP地址位置回答查询，named.conf.local的配置非常简单：

...
...
include "/etc/bind/geoip/GeoIP.acl";

view "Iran" {
      match-clients { IR; };
      recursion no;
      zone "ppod.ir" {
            type master;
            file "/etc/bind/db.ppod.ir.iran";
      };
};

view "default"  {
       include "/etc/bind/named.conf.default-zones";
       ...
       ...

db.ppod.ir.iran的区域是：

; A, AAAA => host record
ppod.ir.     1      IN      A       185.8.172.233

对于default view来说是：

; A, AAAA => host record
ppod.ir.     1      IN      A       5.63.13.22
ppod.ir.     1      IN      A       95.216.12.6

现在，如果我从伊朗查询域ppod.ir，DNS服务器就会给出错误的I。

$ dig ppod.ir # the answer is wrong

; <<>> DiG 9.11.3-1ubuntu1.12-Ubuntu <<>> ppod.ir
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 15519
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 65494
;; QUESTION SECTION:
;ppod.ir.           IN  A

;; ANSWER SECTION:
ppod.ir.        1   IN  A   5.63.13.22
ppod.ir.        1   IN  A   95.216.12.6

;; Query time: 263 msec
;; SERVER: 127.0.0.53#53(127.0.0.53)
;; WHEN: Tue Jul 14 12:59:53 +0430 2020
;; MSG SIZE  rcvd: 68

但是，无论哪种方式，如果我直接询问DNS服务器或跟踪查询，它就会给出正确的IP。

$ dig ppod.ir @171.22.25.82 +short # the answer is right
185.8.172.233

并追踪：

$ dig ppod.ir @1.1.1.1 +trace  +short # the answer is right
NS a.root-servers.net. from server 1.1.1.1 in 257 ms.
NS b.root-servers.net. from server 1.1.1.1 in 257 ms.
NS c.root-servers.net. from server 1.1.1.1 in 257 ms.
NS d.root-servers.net. from server 1.1.1.1 in 257 ms.
NS e.root-servers.net. from server 1.1.1.1 in 257 ms.
NS f.root-servers.net. from server 1.1.1.1 in 257 ms.
NS g.root-servers.net. from server 1.1.1.1 in 257 ms.
NS h.root-servers.net. from server 1.1.1.1 in 257 ms.
NS i.root-servers.net. from server 1.1.1.1 in 257 ms.
NS j.root-servers.net. from server 1.1.1.1 in 257 ms.
NS k.root-servers.net. from server 1.1.1.1 in 257 ms.
NS l.root-servers.net. from server 1.1.1.1 in 257 ms.
NS m.root-servers.net. from server 1.1.1.1 in 257 ms.
RRSIG NS 8 0 ..... from server 1.1.1.1 in 257 ms.
couldn't get address for 'ns2.redcursor.ir': not found
A 185.8.172.233 from server 171.22.25.82 in 40 ms.

TTL的缓存设置为1，bind也符合GeoIP特性，问题是why没有正确地响应？我知道缓存IP地址和公共dns服务器的递归查询，但是根据我配置的内容，IP应该被缓存。

下面是来自相同位置和IP地址的这两个查询( dig ppod.ir和dig ppod.ir @171.22.25.82 )的日志。第一个是错的，第二个是对的。

14-Jul-2020 08:38:21.312 info: client @0x7fbb20000a30 162.158.82.125#56703 (ppod.ir): view default: query: ppod.ir IN A -E(0)D (171.22.25.82)
14-Jul-2020 08:38:21.312 debug 3: client @0x7fbb20000a30 162.158.82.125#56703 (ppod.ir): view default: query 'ppod.ir/A/IN' approved
14-Jul-2020 08:38:21.312 debug 3: client @0x7fbb20000a30 162.158.82.125#56703 (ppod.ir): view default: reset client
14-Jul-2020 08:38:43.308 debug 3: client @0x7fbb20000a30 5.117.5.210#55509: UDP request
14-Jul-2020 08:38:43.308 debug 5: client @0x7fbb20000a30 5.117.5.210#55509: view Iran: using view 'Iran'
14-Jul-2020 08:38:43.308 debug 3: client @0x7fbb20000a30 5.117.5.210#55509: view Iran: request is not signed
14-Jul-2020 08:38:43.308 debug 3: client @0x7fbb20000a30 5.117.5.210#55509: view Iran: recursion not available
14-Jul-2020 08:38:43.308 info: client @0x7fbb20000a30 5.117.5.210#55509 (ppod.ir): view Iran: query: ppod.ir IN A +E(0)K (171.22.25.82)
14-Jul-2020 08:38:43.308 debug 3: client @0x7fbb20000a30 5.117.5.210#55509 (ppod.ir): view Iran: query 'ppod.ir/A/IN' approved
14-Jul-2020 08:38:43.308 debug 3: client @0x7fbb20000a30 5.117.5.210#55509 (ppod.ir): view Iran: reset client

Answer 1

感谢@MichaelHampton指出，我的本地解析器已经配置为使用DNS服务器，这是我设置bind9 DNS服务器的网络的一部分。因此，在不使用systemd-resolver配置本地解析器并启用调制解调器的DHCP之后，现在来自dig的查询给出了正确的答案。

dig ppod.ir

; <<>> DiG 9.11.3-1ubuntu1.12-Ubuntu <<>> ppod.ir
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 21503
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 65494
;; QUESTION SECTION:
;ppod.ir.           IN  A

;; ANSWER SECTION:
ppod.ir.        1   IN  A   185.8.172.233

;; Query time: 153 msec
;; SERVER: 127.0.0.53#53(127.0.0.53)
;; WHEN: Sun Jul 19 12:14:46 +0430 2020
;; MSG SIZE  rcvd: 52