What does the "process executable-name is using deprecated sysctl ..." message mean?

Solution Verified - Updated -

Issue

  • Noticed the following statement, in the system messages file (by default - /var/log/messages):
Sep 21 15:10:00 hostname kernel: process sample-executable-name is using deprecated sysctl (syscall) net.ipv6.neigh.eth1.base_reachable_time; Use net.ipv6.neigh.eth1.base_reachable_time_ms instead.

Environment

  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 5

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