Package: dnsmasq Version: 2.85-1 Here is the relevant dnsmasq config on Debian 11.2:
domain=test.example.com cname=alias.test.example.com,client1.test.example.com cname=alias.dummy.example.com,client1.test.example.com "client1" is a dhcp client, and the dnsmasq server IP is 192.168.0.253 The problem is we can't resolve the name "alias.test.example.com", though we can resolve the name "alias.dummy.example.com" which is out of the domain "test.example.com". $ dig -v DiG 9.16.22-Debian $ dig @192.168.0.253 alias.dummy.example.com alias.test.example.com client1.test.example.com ; <<>> DiG 9.16.22-Debian <<>> @192.168.0.253 alias.dummy.example.com alias.test.example.com client1.test.example.com ; (1 server found) ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 29718 ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 1 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4096 ;; QUESTION SECTION: ;alias.dummy.example.com. IN A ;; ANSWER SECTION: alias.dummy.example.com. 0 IN CNAME client1.test.example.com. client1.test.example.com. 0 IN A 192.168.0.70 ;; Query time: 20 msec ;; SERVER: 192.168.0.253#53(192.168.0.253) ;; WHEN: Wed Mar 02 17:34:27 UTC 2022 ;; MSG SIZE rcvd: 114 ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 62870 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4096 ;; QUESTION SECTION: ;alias.test.example.com. IN A ;; ANSWER SECTION: alias.test.example.com. 5 IN CNAME client1.test.example.com. ;; Query time: 20 msec ;; SERVER: 192.168.0.253#53(192.168.0.253) ;; WHEN: Wed Mar 02 17:34:27 UTC 2022 ;; MSG SIZE rcvd: 96 ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 40301 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4096 ;; QUESTION SECTION: ;client1.test.example.com. IN A ;; ANSWER SECTION: client1.test.example.com. 5 IN A 192.168.0.70 ;; Query time: 16 msec ;; SERVER: 192.168.0.253#53(192.168.0.253) ;; WHEN: Wed Mar 02 17:34:27 UTC 2022 ;; MSG SIZE rcvd: 75 $ dig -t any @192.168.0.253 alias.dummy.example.com alias.test.example.com client1.test.example.com ; <<>> DiG 9.16.22-Debian <<>> -t any @192.168.0.253 alias.dummy.example.com alias.test.example.com client1.test.example.com ; (1 server found) ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 24227 ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 1 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4096 ;; QUESTION SECTION: ;alias.dummy.example.com. IN ANY ;; ANSWER SECTION: alias.dummy.example.com. 0 IN CNAME client1.test.example.com. client1.test.example.com. 0 IN A 192.168.0.70 ;; Query time: 20 msec ;; SERVER: 192.168.0.253#53(192.168.0.253) ;; WHEN: Wed Mar 02 17:34:41 UTC 2022 ;; MSG SIZE rcvd: 114 ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 12433 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4096 ;; QUESTION SECTION: ;alias.test.example.com. IN ANY ;; ANSWER SECTION: alias.test.example.com. 5 IN CNAME client1.test.example.com. ;; Query time: 20 msec ;; SERVER: 192.168.0.253#53(192.168.0.253) ;; WHEN: Wed Mar 02 17:34:41 UTC 2022 ;; MSG SIZE rcvd: 96 ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 31132 ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4096 ;; QUESTION SECTION: ;client1.test.example.com. IN ANY ;; Query time: 20 msec ;; SERVER: 192.168.0.253#53(192.168.0.253) ;; WHEN: Wed Mar 02 17:34:41 UTC 2022 ;; MSG SIZE rcvd: 59
