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pcourtois
Cirrus
Feb 27, 2026Random TCP Resets from F5
Good day all, I am researching an intermittent and random issue where our F5 WAFs respond to customers with the following: "An error occurred while sending the request.::Unable to read data fro...
Juergen_Mang
MVP
Mar 01, 2026Enabling Reset cause logging can give you a hint: https://my.f5.com/manage/s/article/K13223
tmsh modify sys db tm.rstcause.log value enable
Test and review /var/log/ltm
- Nikoolayy1Mar 08, 2026
MVP
Also pcourtois you can see Juergen_Mang article
community.f5.com/kb/communityarticles/the-state-of-http2-full-proxy-with-f5-ltm/344157 as if it is http/2 traffic WAF can send random reset.
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