Oracle Linux 6: Why lsof shows "can't identify protocol" (Doc ID 2206148.1)

Last updated on DECEMBER 15, 2016

Applies to:

Linux OS - Version Oracle Linux 6.7 and later
Information in this document applies to any platform.

Goal

For processes like  ntpd, udev etc, lsof shows the output "can't identify protocol", even when /proc/net/sockstat doesn't show any orphans or any TIME_WAIT and "netstat" doesn't show any CLOSE_WAIT.

Kernel 2.6.32-573.7.1.el6

 

Both test runs were done with ntpd, udev, auditd services running.

Solution

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