I just ran "virsh nwfilter-list" following table shows multicast and mac
and arp spoofing is not allowed. I guess this is why each IP is constrained
with it's vnet MAC address and does not allow floating IP addresses.
[root@fr-kvm1 ~]# virsh nwfilter-list
UUID Name
------------------------------------------------------------------
906f8af9-317a-47be-8568-83d83fda3187 allow-arp
6a3bee5a-272c-4f9c-ba89-7661529740a2 allow-dhcp
74efaf38-e4ce-4550-a79f-b9df5eec74bf allow-dhcp-server
011fc636-4f6c-48cc-a4dd-efe962c9cc8e allow-incoming-ipv4
30ca1846-10ae-4e1e-bf55-a54371d69d8b allow-ipv4
529466c5-0a94-4908-a0b2-c13c3b3bbc82 clean-traffic
7a5c405e-3b9c-4ac7-a330-67a18a1a4701 clean-traffic-gateway
c7e311be-715b-4d77-9b31-f1f4504abb1f no-arp-ip-spoofing
c6a902a9-b9fa-45c1-9e04-1889f20f1d30 no-arp-mac-spoofing
fce5536f-a2d2-4360-a2c9-b697b4cc2054 no-arp-spoofing
ced96d59-f7d5-4393-853d-9b11ed7afda8 no-ip-multicast
d77ac888-14ff-485a-8093-7be87a2ba46b no-ip-spoofing
a1f14101-78c3-4fad-ba1e-f54e30ba48ae no-mac-broadcast
37b3dfcf-de29-48ad-8826-1e3621c728a3 no-mac-spoofing
c16752f2-8f0c-401f-9275-f5e6d5b9de01 no-other-l2-traffic
3b44715b-b542-4aea-97c2-9dd6c5f2ea44 no-other-rarp-traffic
c93e46c2-5a32-40b7-acd9-47872a01b312 qemu-announce-self
a30e079a-fe7d-4efb-ae8e-d822f4135180 qemu-announce-self-rarp
On Wed, Nov 27, 2019 at 3:18 PM Fariborz Navidan <mdvlinquest@gmail.com>
wrote:
> Any idea?
>
> On Tue, Nov 26, 2019 at 6:12 PM Fariborz Navidan <mdvlinquest@gmail.com>
> wrote:
>
>> Hello,
>>
>> I want to be able to use a single secondary IP on two or more VMs but
>> secondary IPs only work on the VM it belongs to it. For this work, I guess
>> promiscuous mode and/or forged transmits should be enabled on the network.
>> For this I have modified the DB table network_offering_details and then
>> restarted the network but it still does not work.
>>
>> When I reserve an IP on a VM and set it on the guest using command "ip
>> addr ad ...", it is reachable and works fine but if I delete the ip from
>> that guest and add it to another guest which secondary IP was not reserved
>> for, it is not reachable using this IP. It means looks like MAC addresses
>> are somehow bound to NIC MAC address.
>>
>> I should notice tat I am running an advanced zone and shared network.and
>> security groups are enabled. Default egress policy is "Allow" and all
>> tcp/udp/icmp ingress traffic is allowed in the security groups.
>>
>> But I am still not able to make a shared IP floating.
>>
>> Please guide me through the right way.
>>
>> Thanks
>>
>
|