DNS option in dhcp always provided
Issue
- Although we have no DNS option configured in Horizon GUI the neutron dhcp server always offers the DNS as the 2 IPs of the dhcp pools:
[root@controller ~]# neutron subnet-show 2b5d9bb8-eb8b-4132-9f90-0f2383393
+------------------+------------------------------------------------------------+
| Field | Value |
+------------------+------------------------------------------------------------+
| allocation_pools | {"start": "192.168.22.100", "end": "192.168.22.200"} |
| cidr | 192.168.22.0/24 |
| dns_nameservers | 0.0.0.0 |
| enable_dhcp | True |
| gateway_ip | 192.168.22.254 |
| host_routes | {"destination": "0.0.0.0/0", "nexthop": "192.168.22.254"} |
| id | 2b5d9bb8-eb8b-4132-9f90-0f2f5579975b |
| ip_version | 4 |
| name | test_net |
| network_id | e902fab2-9724-4ead-b8af-bd89f4586888
| tenant_id | 6fdb261f3ec74f51a926a3003c8b7a87 |
+------------------+------------------------------------------------------------+
[root@controller ~]# cat /var/lib/neutron/dhcp/e902fab2-9724-4ead-b8af-bd89f4586888/opts
tag:tag0,option:classless-static-route,169.254.169.254/32,192.168.22.101
tag:tag0,249,169.254.169.254/32,192.168.22.101
tag:tag0,option:router,192.168.22.254
tag:tag0,option:dns-server,192.168.22.100,192.168.22.101 <===
- How to disable this DNS option being offered ?
Environment
- Red Hat Open Stack
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