cloudstack-users mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Andrija Panic <>
Subject Re: How to prevent DHCp conflict?
Date Wed, 31 Jul 2019 08:15:00 GMT
check if that MAC address exists in the "nics" table in DB - if not - then
it's not an ACS VM.

Are you running a Shared network or Isolated/VPC - I don't understand how
can custom-built DHCP that exists on a user VM reach out to


On Wed, 31 Jul 2019 at 09:42, Fariborz Navidan <>

> Hello,
> As we don't run any other DHCP server in our network, it looks like someone
> is running DHCP server on their VM which conflicts with VR's DHCP server. I
> ran arping against the conflicting DHCP server's IP address through
> cloudbr0 and i get replies from it's MAC address. However I'm not sure if
> this is MAC of a VM's interface or they are running a sort of
> nestedhypervisor and it belongs to a nested VM. How do I trace and find the
> abusive VM to stop the conflict?


Andrija Panić

  • Unnamed multipart/alternative (inline, None, 0 bytes)
View raw message