Dns Priority
Test suite to check DNS service priorities
Valid Address
Description
Configures a simple, valid address and checks the DNS can resolve it. There is no priority involved as a single address is in use.
Scenario
Step 1: Set the following configuration in DUT1:
set interfaces ethernet eth0 address 10.0.0.2/24 set service dns forwarding record host teldat.com ipv4-address 172.24.0.11 set service dns forwarding record host teldat.com ipv6-address ff00::dead:cafe set service dns resolver local
Step 2: Set the following configuration in DUT0:
set interfaces ethernet eth0 address 10.0.0.1/24 set service dns forwarding logs set service dns resolver local set service dns forwarding name-server 10.0.0.2
Step 3: Ping IP address 10.0.0.2 from DUT0:
admin@DUT0$ ping 10.0.0.2 count 1 size 56 timeout 1Show output
PING 10.0.0.2 (10.0.0.2) 56(84) bytes of data. 64 bytes from 10.0.0.2: icmp_seq=1 ttl=64 time=0.296 ms --- 10.0.0.2 ping statistics --- 1 packets transmitted, 1 received, 0% packet loss, time 0ms rtt min/avg/max/mdev = 0.296/0.296/0.296/0.000 ms
Step 4: Run command show host lookup teldat.com type A wait 0 at DUT0 and check if output contains the following tokens:
172.24.0.11Show output
teldat.com has address 172.24.0.11
Step 5: Run command service dns forwarding show logs | cat at DUT0 and expect this output:
Show output
-- Logs begin at Wed 2024-10-09 08:51:52 UTC, end at Wed 2024-10-09 08:51:54 UTC. -- Oct 09 08:51:54 osdx dnsmasq[28734]: dnsmasq: syntax check OK. Oct 09 08:51:54 osdx dnsmasq[28741]: started, version 2.80 cachesize 150 Oct 09 08:51:54 osdx dnsmasq[28741]: DNS service limited to local subnets Oct 09 08:51:54 osdx dnsmasq[28741]: compile time options: IPv6 GNU-getopt DBus i18n IDN DHCP DHCPv6 no-Lua TFTP conntrack ipset auth DNSSEC loop-detect inotify dumpfile Oct 09 08:51:54 osdx dnsmasq[28741]: warning: ignoring resolv-file flag because no-resolv is set Oct 09 08:51:54 osdx dnsmasq[28741]: using nameserver 10.0.0.2#53 Oct 09 08:51:54 osdx dnsmasq[28741]: read /etc/hosts - 1 addresses Oct 09 08:51:54 osdx dnsmasq[28741]: query[A] teldat.com from ::1 Oct 09 08:51:54 osdx dnsmasq[28741]: forwarded teldat.com to 10.0.0.2 Oct 09 08:51:54 osdx dnsmasq[28741]: reply teldat.com is 172.24.0.11
Valid Address IPv6
Description
Configures a simple, valid IPv6 address and checks the DNS can resolve it. There is no priority involved as a single address is in use.
Scenario
Step 1: Set the following configuration in DUT1:
set interfaces ethernet eth0 address 10::2/64 set service dns forwarding record host teldat.com ipv4-address 172.24.0.11 set service dns forwarding record host teldat.com ipv6-address ff00::dead:cafe set service dns resolver local
Step 2: Set the following configuration in DUT0:
set interfaces ethernet eth0 address 10::1/64 set service dns forwarding logs set service dns resolver local set service dns forwarding name-server 10::2
Step 3: Ping IP address 10::2 from DUT0:
admin@DUT0$ ping 10::2 count 1 size 56 timeout 1Show output
PING 10::2(10::2) 56 data bytes 64 bytes from 10::2: icmp_seq=1 ttl=64 time=0.518 ms --- 10::2 ping statistics --- 1 packets transmitted, 1 received, 0% packet loss, time 0ms rtt min/avg/max/mdev = 0.518/0.518/0.518/0.000 ms
Step 4: Run command show host lookup teldat.com type A wait 0 at DUT0 and check if output contains the following tokens:
172.24.0.11Show output
teldat.com has address 172.24.0.11
Step 5: Run command service dns forwarding show logs | cat at DUT0 and expect this output:
Show output
-- Logs begin at Wed 2024-10-09 08:51:58 UTC, end at Wed 2024-10-09 08:52:02 UTC. -- Oct 09 08:52:00 osdx dnsmasq[29194]: dnsmasq: syntax check OK. Oct 09 08:52:00 osdx dnsmasq[29201]: started, version 2.80 cachesize 150 Oct 09 08:52:00 osdx dnsmasq[29201]: DNS service limited to local subnets Oct 09 08:52:00 osdx dnsmasq[29201]: compile time options: IPv6 GNU-getopt DBus i18n IDN DHCP DHCPv6 no-Lua TFTP conntrack ipset auth DNSSEC loop-detect inotify dumpfile Oct 09 08:52:00 osdx dnsmasq[29201]: warning: ignoring resolv-file flag because no-resolv is set Oct 09 08:52:00 osdx dnsmasq[29201]: using nameserver 10::2#53 Oct 09 08:52:00 osdx dnsmasq[29201]: read /etc/hosts - 1 addresses Oct 09 08:52:02 osdx dnsmasq[29201]: query[A] teldat.com from ::1 Oct 09 08:52:02 osdx dnsmasq[29201]: forwarded teldat.com to 10::2 Oct 09 08:52:02 osdx dnsmasq[29201]: reply teldat.com is 172.24.0.11
Multiple Addresses
Description
Configures two DNS addresses: one invalid and the other valid. Checks that the resolution works against the second address, while the first one does not respond.
Scenario
Step 1: Set the following configuration in DUT1:
set interfaces ethernet eth0 address 10.0.0.2/24 set service dns forwarding record host teldat.com ipv4-address 172.24.0.11 set service dns forwarding record host teldat.com ipv6-address ff00::dead:cafe set service dns resolver local
Step 2: Set the following configuration in DUT0:
set interfaces ethernet eth0 address 10.0.0.1/24 set service dns forwarding logs set service dns resolver local set service dns forwarding name-server 10.0.0.10 priority 0 set service dns forwarding name-server 10.0.0.2 priority 1
Step 3: Ping IP address 10.0.0.2 from DUT0:
admin@DUT0$ ping 10.0.0.2 count 1 size 56 timeout 1Show output
PING 10.0.0.2 (10.0.0.2) 56(84) bytes of data. 64 bytes from 10.0.0.2: icmp_seq=1 ttl=64 time=0.590 ms --- 10.0.0.2 ping statistics --- 1 packets transmitted, 1 received, 0% packet loss, time 0ms rtt min/avg/max/mdev = 0.590/0.590/0.590/0.000 ms
Step 4: Run command show host lookup teldat.com type A wait 0 at DUT0 and check if output contains the following tokens:
172.24.0.11Show output
teldat.com has address 172.24.0.11
Step 5: Run command service dns forwarding show logs | cat at DUT0 and expect this output:
Show output
-- Logs begin at Wed 2024-10-09 08:52:05 UTC, end at Wed 2024-10-09 08:52:09 UTC. -- Oct 09 08:52:07 osdx dnsmasq[29664]: dnsmasq: syntax check OK. Oct 09 08:52:07 osdx dnsmasq[29671]: started, version 2.80 cachesize 150 Oct 09 08:52:07 osdx dnsmasq[29671]: DNS service limited to local subnets Oct 09 08:52:07 osdx dnsmasq[29671]: compile time options: IPv6 GNU-getopt DBus i18n IDN DHCP DHCPv6 no-Lua TFTP conntrack ipset auth DNSSEC loop-detect inotify dumpfile Oct 09 08:52:07 osdx dnsmasq[29671]: warning: ignoring resolv-file flag because no-resolv is set Oct 09 08:52:07 osdx dnsmasq[29671]: using nameserver 10.0.0.10#53 Oct 09 08:52:07 osdx dnsmasq[29671]: using nameserver 10.0.0.2#53 Oct 09 08:52:07 osdx dnsmasq[29671]: read /etc/hosts - 1 addresses Oct 09 08:52:07 osdx dnsmasq[29671]: query[A] teldat.com from ::1 Oct 09 08:52:07 osdx dnsmasq[29671]: forwarded teldat.com to 10.0.0.10 Oct 09 08:52:08 osdx dnsmasq[29671]: query[A] teldat.com from 127.0.0.1 Oct 09 08:52:09 osdx dnsmasq[29671]: query[A] localhost.domain from ::1 Oct 09 08:52:09 osdx dnsmasq[29671]: forwarded localhost.domain to 10.0.0.10 Oct 09 08:52:09 osdx dnsmasq[29671]: query[A] teldat.com from ::1 Oct 09 08:52:09 osdx dnsmasq[29671]: forwarded teldat.com to 10.0.0.2 Oct 09 08:52:09 osdx dnsmasq[29671]: reply teldat.com is 172.24.0.11
Multiple IPv6 Addresses
Description
Configures two IPv6 DNS addresses: one invalid and the other valid. Checks that the resolution works against the second address, while the first one does not respond.
Scenario
Step 1: Set the following configuration in DUT1:
set interfaces ethernet eth0 address 10::2/64 set service dns forwarding record host teldat.com ipv4-address 172.24.0.11 set service dns forwarding record host teldat.com ipv6-address ff00::dead:cafe set service dns resolver local
Step 2: Set the following configuration in DUT0:
set interfaces ethernet eth0 address 10::1/64 set service dns forwarding logs set service dns resolver local set service dns forwarding name-server 10::10 priority 0 set service dns forwarding name-server 10::2 priority 1
Step 3: Ping IP address 10::2 from DUT0:
admin@DUT0$ ping 10::2 count 1 size 56 timeout 1Show output
PING 10::2(10::2) 56 data bytes 64 bytes from 10::2: icmp_seq=1 ttl=64 time=0.441 ms --- 10::2 ping statistics --- 1 packets transmitted, 1 received, 0% packet loss, time 0ms rtt min/avg/max/mdev = 0.441/0.441/0.441/0.000 ms
Step 4: Run command show host lookup teldat.com type A wait 0 at DUT0 and check if output contains the following tokens:
172.24.0.11Show output
teldat.com has address 172.24.0.11
Step 5: Run command service dns forwarding show logs | cat at DUT0 and expect this output:
Show output
-- Logs begin at Wed 2024-10-09 08:52:13 UTC, end at Wed 2024-10-09 08:52:19 UTC. -- Oct 09 08:52:15 osdx dnsmasq[30126]: dnsmasq: syntax check OK. Oct 09 08:52:15 osdx dnsmasq[30133]: started, version 2.80 cachesize 150 Oct 09 08:52:15 osdx dnsmasq[30133]: DNS service limited to local subnets Oct 09 08:52:15 osdx dnsmasq[30133]: compile time options: IPv6 GNU-getopt DBus i18n IDN DHCP DHCPv6 no-Lua TFTP conntrack ipset auth DNSSEC loop-detect inotify dumpfile Oct 09 08:52:15 osdx dnsmasq[30133]: warning: ignoring resolv-file flag because no-resolv is set Oct 09 08:52:15 osdx dnsmasq[30133]: using nameserver 10::10#53 Oct 09 08:52:15 osdx dnsmasq[30133]: using nameserver 10::2#53 Oct 09 08:52:15 osdx dnsmasq[30133]: read /etc/hosts - 1 addresses Oct 09 08:52:17 osdx dnsmasq[30133]: query[A] teldat.com from ::1 Oct 09 08:52:17 osdx dnsmasq[30133]: forwarded teldat.com to 10::10 Oct 09 08:52:18 osdx dnsmasq[30133]: query[A] teldat.com from 127.0.0.1 Oct 09 08:52:19 osdx dnsmasq[30133]: query[A] teldat.com from ::1 Oct 09 08:52:19 osdx dnsmasq[30133]: forwarded teldat.com to 10::2 Oct 09 08:52:19 osdx dnsmasq[30133]: reply teldat.com is 172.24.0.11 Oct 09 08:52:19 osdx dnsmasq[30133]: query[A] localhost.domain from ::1 Oct 09 08:52:19 osdx dnsmasq[30133]: forwarded localhost.domain to 10::10