[neutron] Disable dhcp drop rule

Eugen Block eblock at nde.ag
Wed Aug 19 13:36:16 UTC 2020

Hi *,

we recently upgraded our Ocata Cloud to Train and also switched from  
linuxbridge to openvswitch.

One of our instances within the cloud works as DHCP server and to make  
that work we had to comment the respective part in this file on the  
compute node the instance was running on:


Now we tried the same in


but restarting openstack-neutron-openvswitch-agent.service didn't drop  
that rule, the DHCP reply didn't get through. To continue with our  
work we just dropped it manually, so we get by, but since there have  
been a couple of years between Ocata and Train, is there any smoother  
or better way to achieve this? This seems to be a reoccuring request  
but I couldn't find any updates on this topic. Maybe someone here can  
shed some light? Is there more to change than those two files I  

Any pointers are highly appreciated!

Best regards,

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