When DHCP relay is configured in a routing-instance and routing-instance default knob if configured, DHCP traffic is not being relayed.

routing-instances {

  TEST-VRF {

    description "TEST VRF";

    instance-type vrf;

    forwarding-options {

      dhcp-relay {

        server-group {

          TEST_cgnat {

            159.143.132.30;

            159.143.132.31;

          }

        }

        group 1232 {

          active-server-group TEST_cgnat;

          forward-only {

            routing-instance default;

          }

          interface irb.1232;

        }

      }

    }

    interface irb.1232;

  }

Please configure "overrides" knob under dhcp-relay

set routing-instances TEST-VRF forwarding-options dhcp-relay overrides allow-snooped-clients

set routing-instances TEST-VRF forwarding-options dhcp-relay overrides trust-option-82

set routing-instances TEST-VRF forwarding-options dhcp-relay overrides bootp-support

set routing-instances TEST-VRF forwarding-options dhcp-relay forward-only routing-instance default

set routing-instances TEST-VRF forwarding-options dhcp-relay server-group TEST_cgnat 159.143.132.30

set routing-instances TEST-VRF forwarding-options dhcp-relay server-group TEST_cgnat 159.143.132.31

set routing-instances TEST-VRF forwarding-options dhcp-relay active-server-group TEST_cgnat

set routing-instances TEST-VRF forwarding-options dhcp-relay group 1232 active-server-group TEST_cgnat

set routing-instances TEST-VRF forwarding-options dhcp-relay group 1232 interface irb.1232

set forwarding-options dhcp-relay forward-only-replies