[RHEL] Network won't come up and client unable to get IPv6 address when using DHCP6

Solution Verified - Updated -

Issue

When your system is configured to obtain a IPv6 IP address through DHCP:

  • System unable to get IPv6 address using DHCP;
  • System hangs at screen "Bringing up interface :
  • Command # service network restart or ifup <interface> takes forever and only stops upon ^C

Environment

  • Red Hat Enterprise Linux 6

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