[Neutron] Not create .2 port

Tony Liu tonyliu0592 at hotmail.com
Tue Sep 22 18:57:46 UTC 2020


I create a subnet with --no-dhcp, the .2 address is not allocated,
but a port is still created without any address. Is this expected?
Since DHCP is disabled, what's this port for?

Thanks!
Tony
> -----Original Message-----
> From: Slawek Kaplonski <skaplons at redhat.com>
> Sent: Friday, September 18, 2020 12:49 AM
> To: Tony Liu <tonyliu0592 at hotmail.com>
> Cc: openstack-discuss at lists.openstack.org
> Subject: Re: [Neutron] Not create .2 port
> 
> Hi,
> 
> On Fri, Sep 18, 2020 at 03:40:54AM +0000, Tony Liu wrote:
> > Hi,
> >
> > When create a subnet, by default, the first address is the gateway and
> > Neutron also allocates an address for serving DHCP and DNS. Is there
> > any way to NOT create such port when creating subnet?
> 
> You can specify "--gateway None" if You don't want to have gateway
> configured in Your subnet.
> And for dhcp ports, You can set "--no-dhcp" for subnet so it will not
> create dhcp ports in such subnet also.
> 
> >
> >
> > Thanks!
> > Tony
> >
> >
> 
> --
> Slawek Kaplonski
> Senior software engineer
> Red Hat




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