Forum Discussion
Andy-didnt-like-uucp
Cirrus
CirrusF5OS r2800 out-of-box DNS
Hi Guys
i'm a bit new to F5OS & 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 > 8.8.8.8.domain: 48039+ AAAA? api.f5.com. (28)
12:20:21.423614 IP appliance-1.chassis.local.56070 > 8.8.8.8.domain: 17071+ A? api.f5.com. (28)
12:20:21.491076 IP appliance-1.chassis.local.56970 > <DOMESTIC-DNS>.domain: 48845+ PTR? 4.4.8.8.in-addr.arpa. (38)
12:20:25.423992 IP appliance-1.chassis.local.51778 > 8.8.4.4.domain: 17071+ A? api.f5.com. (28)
12:20:25.423992 IP appliance-1.chassis.local.57664 > 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?
Hello Andy-didnt-like-uucp,
Please, check this
https://my.f5.com/manage/s/article/K000134790
Let me know if it helps.
Hey Andy-didnt-like-uucp - that sounds like something an iRule could solve. My teammate Jason is on PTO this week, so maybe MVPs Dario_Garrido or StephanManthey could help?
Hello Andy-didnt-like-uucp ,
rSeries has its own interface to configure those DNS settings.
I recommend you to check this info
Please, let me know if this helps.
- Andy-didnt-like-uucp
Hi Dario
this is basically how i gonfigured fresh box with domestic DNS & NTP. & then i've noticed chassis gueries GDNS. where this GDNS is configured in r2800's F5OS?
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.
