Forum Discussion
ldesfosses
Cirrus
I think you'll not be able to use UDP::something if your VS is not in FastL4 ( BIGPROTO ) or UDP. I understand it's not "normal" because UDP is not called if the VS is not in UDP.
When a VIP is configured in FastL4, it handle each packet, even for TCP, and a single packet.
https://support.f5.com/csp/article/K8082#l4
This is the only difference I see that can explain why it work in FastL4 and not in Standard. I suspect that to save memory, a VIP in TCP/Standard will not load all the event, UDP in your case. It's pure speculation tho.
Sylvain_Goulmy
Apr 23, 2020Altostratus
Thank you for your input.