Mailing List Archive

[Bug 63893] New: Bogus warning "unsupported command 20"
https://bz.apache.org/bugzilla/show_bug.cgi?id=63893

Bug ID: 63893
Summary: Bogus warning "unsupported command 20"
Product: Apache httpd-2
Version: 2.4.38
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P2
Component: mod_remoteip
Assignee: bugs@httpd.apache.org
Reporter: charlemagnelasse@gmail.com
Target Milestone: ---

My log filled just my complete EC2 HDD because apache remoteip spams my logs
full with "RemoteIPProxyProtocol: unsupported command 20". This is caused by
the health checks of AWS's NLB - which sends LOCAL ver_cmd proxy headers to
check for problems.

This is (according to the spec
https://www.haproxy.org/download/1.8/doc/proxy-protocol.txt) a valid ver_cmd
and shouldn't cause these kind of log spam.

See "9. Sample code" for details.

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