Mar 27, 2026 - For details about updated CVE-2025-53521 (BIG-IP APM vulnerability), refer to K000156741.

Forum Discussion

Hoang_Hung's avatar
Hoang_Hung
Icon for Cirrus rankCirrus
Sep 08, 2019

Lost 1 packet when Query F5 DNS

Hi guy We have configuration F5 DNS. But After we were config complete, We have test, >> we see that: When nslookup domain name: F5 DNS lost 1 packet first, I dont understand. When we ping F5 DN...
application delivery
BIG-IP DNS
iaine's avatar
iaine
Icon for Nacreous rankNacreous
Sep 09, 2019

Hi

 

Do you see the request arrive at your listener? If you do a tcpdump for dns requests on your f5 and then run the same test, do you see the first request arrive?