protocols: static: T3680: do not delete DHCP received routes

An ISC DHCP hook script is used to install the received default route into FRR
by simple calls to vtysh. By moving to frr-reload.py the DHCP default route
was deleted as it was not found in the running config.

This commit checks all interfaces if DHCP is enabled and if so - will dynamically
add the route to the generated FRR configuration.

1 files changed, 9 insertions, 0 deletions

diff --git a/data/templates/frr/staticd.frr.tmpl b/data/templates/frr/staticd.frr.tmpl
index db59a44c2..bfe959c1d 100644
--- a/data/templates/frr/staticd.frr.tmpl
+++ b/data/templates/frr/staticd.frr.tmpl
@@ -15,6 +15,15 @@ vrf {{ vrf }}
 {{ static_routes(ip_prefix, prefix, prefix_config) }}
 {%-   endfor -%}
 {% endif %}
+{# IPv4 default routes from DHCP interfaces #}
+{% if dhcp is defined and dhcp is not none %}
+{%   for interface in dhcp %}
+{%     set next_hop = interface | get_dhcp_router %}
+{%     if next_hop is defined and next_hop is not none %}
+{{ ip_prefix }} route 0.0.0.0/0 {{ next_hop }} {{ interface }} tag 210 210
+{%     endif %}
+{%   endfor %}
+{% endif %}
 {# IPv6 routing #}
 {% if route6 is defined and route6 is not none %}
 {%   for prefix, prefix_config in route6.items() %}