Why dhclient-script fails to honor DEFROUTE/GATEWAYDEV parameter in ifcfg-XXX file with dhcp Classless Static Route offers in RHEL7?

Solution Unverified - Updated -

Issue

  • RHEL7.2 fails to honor DEFROUTE parameter where multiple interfaces acquires ip from dhcp which uses the option classless-static-routes in Openstack environment.
  • dhclient-script fails to honor DEFROUTE/GATEWAYDEV parameter in ifcfg-XXX file with dhcp Classless Static Route offers.

Environment

  • Red Hat Enterprise Linux (RHEL) 7.2.
  • dhcp-common-4.2.5-40.el7.x86_64.
  • dhcp-libs-4.2.5-40.el7.x86_64.
  • dhclient-4.2.5-40.el7.x86_64.

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