1ebe52847a
- Why I did it If multiple Vlans are configured to have DHCPv6 relay, only one relay instance is able to capture DHCP packets received from upstream, this is as a result of kernel design to operate this way (SO_REUSEPORT). DHCPv6 transmit unicast packets to clients, only multicast packets can be captured on multiple application listening on the same UDP port. This issue causing only one Vlan interface to get packets from servers. - How I did it Change the design to neglect Vlan isolation and run only one relay instance serving all Vlans with all configured DHCP servers. - How to verify it Run DHCPv6 relay test with 2 Vlans configured do have a DHCP relay. Signed-off-by: Shlomi Bitton <shlomibi@nvidia.com>
39 lines
1.5 KiB
Django/Jinja
39 lines
1.5 KiB
Django/Jinja
{# Append DHCPv6 agent #}
|
|
{% set relay_for_ipv6 = { 'flag': False } %}
|
|
[program:isc-dhcpv6-relay-{{ v6_vlan_list|join("-") }}]
|
|
command=/usr/sbin/dhcrelay -d -6 --name-alias-map-file /tmp/port-name-alias-map.txt
|
|
{#- We get all DHCPv6 servers only once #}
|
|
{%- set dhcpv6_server_list = [] %}
|
|
{%- for vlan_name in v6_vlan_list %}
|
|
{%- for dhcpv6_server in VLAN[vlan_name]['dhcpv6_servers'] %}
|
|
{%- if dhcpv6_server | ipv6 and dhcpv6_server not in dhcpv6_server_list %}
|
|
{%- set _dummy = dhcpv6_server_list.append( dhcpv6_server ) %}
|
|
{%- endif %}
|
|
{%- endfor %}
|
|
{%- endfor %}
|
|
{#- We treat each VLAN as a downstream interface (-l), as we only want to listen for requests #}
|
|
{%- for vlan_name in v6_vlan_list %} -l {{ vlan_name }}{% endfor -%}
|
|
{#- We treat all other interfaces as upstream interfaces (-u), as we only want to listen for replies #}
|
|
{%- for dhcpv6_server in dhcpv6_server_list %}
|
|
{%- if dhcpv6_server | ipv6 %}
|
|
{%- for (name, prefix) in VLAN_INTERFACE|pfx_filter %}
|
|
{%- if prefix | ipv6 and name not in v6_vlan_list%} -u {{ dhcpv6_server }}%%{{ name }} {% endif -%}
|
|
{% endfor %}
|
|
{% for (name, prefix) in INTERFACE|pfx_filter %}
|
|
{% if prefix | ipv6 %} -u {{ dhcpv6_server }}%%{{ name }} {% endif -%}
|
|
{% endfor %}
|
|
{% for (name, prefix) in PORTCHANNEL_INTERFACE|pfx_filter %}
|
|
{% if prefix | ipv6 %} -u {{ dhcpv6_server }}%%{{ name }} {% endif -%}
|
|
{% endfor %}
|
|
{% endif %}
|
|
{% endfor %}
|
|
|
|
priority=3
|
|
autostart=false
|
|
autorestart=false
|
|
stdout_logfile=syslog
|
|
stderr_logfile=syslog
|
|
dependent_startup=true
|
|
dependent_startup_wait_for=start:exited
|
|
|