dhcp-client: T5760: add CLI option to pass user-class parameter

Example:
set interfaces ethernet eth0 dhcp-options user-class VyOS
or
set interfaces ethernet eth0 dhcp-options user-class 56:79:4f:53

1 files changed, 9 insertions, 0 deletions

diff --git a/data/templates/dhcp-client/ipv4.j2 b/data/templates/dhcp-client/ipv4.j2
index 4a5d5e54d..77905e054 100644
--- a/data/templates/dhcp-client/ipv4.j2
+++ b/data/templates/dhcp-client/ipv4.j2
@@ -25,6 +25,15 @@ interface "{{ ifname }}" {
 {%     endif %}
     send vendor-class-identifier {{ vendor_class_id }};
 {% endif %}
+{% if dhcp_options.user_class is vyos_defined %}
+{%     set user_class = dhcp_options.user_class %}
+{#   Use HEX representation of client-id as it is send in MAC-address style using hex characters. #}
+{#   If not HEX, use double quotes ASCII format #}
+{%     if not user_class.split(':') | length >= 3 %}
+{%         set user_class = '"' ~ dhcp_options.user_class ~ '"' %}
+{%     endif %}
+    send user-class {{ user_class }};
+{% endif %}
     # The request statement causes the client to request that any server responding to the
     # client send the client its values for the specified options.
     request subnet-mask, broadcast-address,{{ " routers," if dhcp_options.no_default_route is not vyos_defined }} domain-name-servers,