How does server 127.127.1.0 and fudge in /etc/ntp.conf work?

Solution Verified - Updated -

Issue

  • What is the difference in ntpd's behavior when the server 127.127.1.0 and fudge 127.127.1.0 lines in /etc/ntp.conf are commented out?
  • What happens when you comment the server 127.127.1.0 line in ntp.conf?
  • Why does ntpd in RHEL5 synchronize with the local system clock by default? Is it okay to comment out the server 127.127.1.0 line in /etc/ntp.conf?

Environment

  • Red Hat Enterprise Linux (RHEL) 6
  • Red Hat Enterprise Linux (RHEL) 5
  • ntp

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