我想让 DNS 以循环方式工作。所以我必须将一个条目放入/etc/hosts. 但是，这不允许通配符域。
有什么办法可以在 dnsmasq 中做到这一点吗？
所以我会得到类似的东西：
*.test.example. 0 IN CNAME mytest.example.
mytest.example. 0 IN A 192.0.2.123
我检查了 v2.77 并发现通配符 CNAME 在那里工作。您应该添加到 config cname=*.example.com,default.example.com，但您的 dnsmasq 应该是域的权威服务器（在本例中为 example.com）。可以根据man进行配置。就我而言，我有这样的配置：
/etc/主机
Run Code Online (Sandbox Code Playgroud)127.0.0.1 default.example.com 127.0.0.2 default.example.com 127.0.0.3 default.example.com 127.0.0.4 default.example.com 127.0.0.5 default.example.com/etc/dnsmasq.conf
Run Code Online (Sandbox Code Playgroud)cname=*.example.com,default.example.com auth-server=example.com,eth0 interface-name=example.com,eth0 auth-zone=example.com,127.0.0.0/24,eth0
结果：
[root@centos-linux ~]# dig @127.0.0.1 *.example.com
; <<>> DiG 9.9.4-RedHat-9.9.4-29.el7_2.3 <<>> @127.0.0.1 *.example.com
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 6531
;; flags: qr rd ra ad; QUERY: 1, ANSWER: 6, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;*.example.com. IN A
;; ANSWER SECTION:
*.example.com. 600 IN CNAME default.example.com.
default.example.com. 600 IN A 127.0.0.3
default.example.com. 600 IN A 127.0.0.4
default.example.com. 600 IN A 127.0.0.5
default.example.com. 600 IN A 127.0.0.2
default.example.com. 600 IN A 127.0.0.1
;; Query time: 0 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Mon Jun 05 16:28:13 MSK 2017
;; MSG SIZE rcvd: 155
[root@centos-linux ~]# nslookup 2.example.com 127.0.0.1
Server: 127.0.0.1
Address: 127.0.0.1#53
Non-authoritative answer:
2.example.com canonical name = default.example.com.
Name: default.example.com
Address: 127.0.0.5
Name: default.example.com
Address: 127.0.0.2
Name: default.example.com
Address: 127.0.0.3
Name: default.example.com
Address: 127.0.0.4
Name: default.example.com
Address: 127.0.0.1