HTTP header key not formatted correctly

[66li]

Expecting to convert all HTTP keys to lowercase, but in reality, this does not work,
Is there an existing solution for reference

[k8s-ci-robot]

This issue is currently awaiting triage.

If Ingress contributors determines this is a relevant issue, they will accept it by applying the triage/accepted label and provide further guidance.

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[66li]

i need help

[longwuyuan]

• Look at the template of a new bug report
• Edit this issue description and answer those questions here in this issue description
• Ensure to use markdown format
• Give some examples
• Search github for other users having attempted it
• One good example is geop2 related configs injected into the nginx.conf for variables

This having data, context, links and elaborate descriptions can help draw attention as there are hardly any resources here.

You can even get more people to look at your messages on kubernetes.slack.com in the ingress-nginx-users channel (register at slack.k8s.io if needed)

/remove-kind bug
/kind support