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指定address配置时，仍然对上游服务器请求dns解析 #281

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unicser opened this issue Dec 21, 2019 · 1 comment

unicser commented Dec 21, 2019

问题现象
指定address配置时，仍然对上游服务器请求dns解析

运行环境

固件型号
Openwrt 18.06
运营商
N/A

重现步骤

DNS配置
server 114.114.114.114
server 180.76.76.76
server 223.5.5.5
server 119.29.29.29
address /test.lan/10.10.10.10
尝试解析test.lan，结果如下
$ host test.lan 192.168.1.1
Using domain server:
Name: 192.168.1.1
Address: 192.168.1.1#53
Aliases:

test.lan has address 10.10.10.10
Host test.lan not found: 3(NXDOMAIN)
Host test.lan not found: 3(NXDOMAIN)

在192.168.1.1抓包 tcpdump -pni ppp0 udp port 53，可以看到类似如下结果
13:03:58.945034 IP 115.193.142.117.28121 > 119.29.29.29.53: 519+ [1au] AAAA? test.lan. (36)
13:03:58.945199 IP 115.193.142.117.36664 > 223.5.5.5.53: 519+ [1au] AAAA? test.lan. (36)
13:03:58.945283 IP 115.193.142.117.17538 > 180.76.76.76.53: 519+ [1au] AAAA? test.lan. (36)
13:03:58.945344 IP 115.193.142.117.51248 > 114.114.114.114.53: 519+ [1au] AAAA? test.lan. (36)
13:03:58.954150 IP 223.5.5.5.53 > 115.193.142.117.36664: 519 NXDomain 0/1/0 (100)
13:03:58.954551 IP 180.76.76.76.53 > 115.193.142.117.17538: 519 NXDomain 0/1/1 (111)
13:03:58.955956 IP 115.193.142.117.28121 > 119.29.29.29.53: 520+ [1au] MX? test.lan. (36)
13:03:58.956035 IP 115.193.142.117.36664 > 223.5.5.5.53: 520+ [1au] MX? test.lan. (36)
13:03:58.956090 IP 115.193.142.117.17538 > 180.76.76.76.53: 520+ [1au] MX? test.lan. (36)
13:03:58.956181 IP 115.193.142.117.51248 > 114.114.114.114.53: 520+ [1au] MX? test.lan. (36)
13:03:58.957686 IP 114.114.114.114.53 > 115.193.142.117.51248: 519 NXDomain 0/1/1 (111)
13:03:58.965686 IP 180.76.76.76.53 > 115.193.142.117.17538: 520 NXDomain 0/1/1 (111)
13:03:58.965948 IP 223.5.5.5.53 > 115.193.142.117.36664: 520 NXDomain 0/1/0 (100)
13:03:58.968317 IP 114.114.114.114.53 > 115.193.142.117.51248: 520 NXDomain 0/1/1 (111)
13:03:59.020555 IP 119.29.29.29.53 > 115.193.142.117.28121: 520 NXDomain 0/1/1 (111)
13:03:59.030315 IP 119.29.29.29.53 > 115.193.142.117.28121: 519 NXDomain 0/1/1 (111)

信息收集
N/A

Owner

pymumu commented Dec 21, 2019

IPV6的仍然会查询上游，配置
address /test.lan/#6

pymumu closed this as completed

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