F5OS r2800 out-of-box DNS

Question

Hi Guysi'm a bit new to F5OS &amp; need some help. i have fresh unpacked r2800 which i configured with 2 domestic DNSs only in RFC1918. But when i watch on tcpdump i can see chassis queries google DNSs along with domestic those:12:20:21.423548 IP appliance-1.chassis.local.37917 &gt; 8.8.8.8.domain: 48039+ AAAA? api.f5.com. (28)12:20:21.423614 IP appliance-1.chassis.local.56070 &gt; 8.8.8.8.domain: 17071+ A? api.f5.com. (28)12:20:21.491076 IP appliance-1.chassis.local.56970 &gt; &lt;DOMESTIC-DNS&gt;.domain: 48845+ PTR? 4.4.8.8.in-addr.arpa. (38)12:20:25.423992 IP appliance-1.chassis.local.51778 &gt; 8.8.4.4.domain: 17071+ A? api.f5.com. (28)12:20:25.423992 IP appliance-1.chassis.local.57664 &gt; 8.8.4.4.domain: 48039+ AAAA? api.f5.com. (28)/etc/resolv.conf doesnt contain anything else except domestic DNSs. i'm a bit surprised... how can i disable querying google DNSs?

dario_garrido · Accepted Answer

Hello&nbsp;Andy-didnt-like-uucp,
Please, check this
https://my.f5.com/manage/s/article/K000134790
Let me know if it helps.
&nbsp;

leslie_hubertus · Answer

Hey&nbsp;Andy-didnt-like-uucp&nbsp;- that sounds like something an iRule could solve. My teammate Jason is on PTO this week, so maybe MVPs&nbsp;Dario_Garrido&nbsp;or StephanManthey&nbsp;could help?

dario_garrido · Answer

Hello,
Do you have a static IP configuration in your management interface or DHCP?Sometimes DHCP configuration can push a DNS configuration, so importing your home router DNS settings.
&nbsp;

andy-didnt-like-uucp · Answer

reboot chassis was of help. tnx

dario_garrido · Answer

Hello&nbsp;Andy-didnt-like-uucp&nbsp;,
rSeries has its own interface to configure those DNS settings.
I recommend you to check this info
https://clouddocs.f5.com/training/community/rseries-training/html/initial_setup_of_rseries_platform_layer.html#system-settings
Please, let me know if this helps.

andy-didnt-like-uucp · Answer

Hi Dariothis is basically how i gonfigured fresh box with domestic DNS &amp; NTP. &amp; then i've noticed chassis gueries GDNS. where this GDNS is configured in r2800's F5OS?

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F5OS r2800 out-of-box DNS

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