Network Extension feature doesn't persist the vlan information

[kiranchavala]

problem

Network Extension feature doesn't persist the vlan information

versions

ACS 4.23, KVM

The steps to reproduce the bug

Follow the steps mentioned here to register network extension

https://github.com/apache/cloudstack-extensions/blob/network-namespace/Network-Namespace/README.md

1. Create a network offering with vlan enabled

2. Create a network based on the above network offering

3. Launch a vm in the network > Vm deployed successfully

4. Destroy the vm

After some time the network state changes from implemented to allocated since there are no vm's

5. Check the networks table, the brodcast_uri changes to NULL

6. The subsequent vm launch will result in a failure

logs

root@Cloudstack-423:/var/log/cloudstack/management#  cat /var/log/cloudstack/management/management-server.log.2026-09-07 | grep -i "logid:63df11b4" | grep -iE "Script output|failed with exit code|Cannot find|Ensuring network
    device|Implementing network extension|applyFWRules|Applying|dhcp|dns"
2026-09-07 11:14:23,762 DEBUG [c.c.c.CapacityManagerImpl] (API-Job-Executor-49:[ctx-564cbc63, job-1216, ctx-099a3943, FirstFitRoutingAllocator]) (logid:63df11b4) Hosts's actual total CPU: 12748 and CPU after applying overprovisioning: 12748
2026-09-07 11:14:24,714 DEBUG [c.c.c.CapacityManagerImpl] (Work-Job-Executor-63:[ctx-806840fb, job-1216/job-1217, ctx-f951d8a4]) (logid:63df11b4) Hosts's actual total CPU: 12748 and CPU after applying overprovisioning: 12748
2026-09-07 11:14:24,716 DEBUG [c.c.c.CapacityManagerImpl] (Work-Job-Executor-63:[ctx-806840fb, job-1216/job-1217, ctx-f951d8a4]) (logid:63df11b4) Hosts's actual total CPU: 12748 and CPU after applying overprovisioning: 12748
2026-09-07 11:14:24,717 DEBUG [c.c.c.CapacityManagerImpl] (Work-Job-Executor-63:[ctx-806840fb, job-1216/job-1217, ctx-f951d8a4]) (logid:63df11b4) Hosts's actual total CPU: 12748 and CPU after applying overprovisioning: 12748
2026-09-07 11:14:24,756 INFO  [o.a.c.f.e.n.NetworkExtensionElement] (Work-Job-Executor-63:[ctx-806840fb, job-1216/job-1217, ctx-f951d8a4]) (logid:63df11b4) Implementing network extension for network Network {"id": 227, "name": "test6", "uuid": "2e690dff-8d4e-4603-8454-7e06672bdc56", "networkofferingid": 40} (VLAN null)
2026-09-07 11:14:24,756 INFO  [o.a.c.f.e.n.NetworkExtensionElement] (Work-Job-Executor-63:[ctx-806840fb, job-1216/job-1217, ctx-f951d8a4]) (logid:63df11b4) Ensuring network device for network Network {"id": 227, "name": "test6", "uuid": "2e690dff-8d4e-4603-8454-7e06672bdc56", "networkofferingid": 40} (current={})
2026-09-07 11:14:25,306 DEBUG [o.a.c.f.e.n.NetworkExtensionElement] (Work-Job-Executor-63:[ctx-806840fb, job-1216/job-1217, ctx-f951d8a4]) (logid:63df11b4) Script output: {"host":"192.168.55.179","namespace":"cs-net-227"}
2026-09-07 11:14:25,316 INFO  [o.a.c.f.e.n.NetworkExtensionElement] (Work-Job-Executor-63:[ctx-806840fb, job-1216/job-1217, ctx-f951d8a4]) (logid:63df11b4) Ensuring network device for network Network {"id": 227, "name": "test6", "uuid": "2e690dff-8d4e-4603-8454-7e06672bdc56", "networkofferingid": 40} (current={"host":"192.168.55.179","namespace":"cs-net-227"})
2026-09-07 11:14:25,628 DEBUG [o.a.c.f.e.n.NetworkExtensionElement] (Work-Job-Executor-63:[ctx-806840fb, job-1216/job-1217, ctx-f951d8a4]) (logid:63df11b4) Script output: {"host":"192.168.55.179","namespace":"cs-net-227"}
2026-09-07 11:14:27,212 DEBUG [o.a.c.f.e.n.NetworkExtensionElement] (Work-Job-Executor-63:[ctx-806840fb, job-1216/job-1217, ctx-f951d8a4]) (logid:63df11b4) Script output: Cannot find device "vn--227"
2026-09-07 11:14:27,212 ERROR [o.a.c.f.e.n.NetworkExtensionElement] (Work-Job-Executor-63:[ctx-806840fb, job-1216/job-1217, ctx-f951d8a4]) (logid:63df11b4) Network extension script implement-network failed with exit code 3: Cannot find device "vn--227"
2026-09-07 11:14:27,261 DEBUG [c.c.n.f.FirewallManagerImpl] (Work-Job-Executor-63:[ctx-806840fb, job-1216/job-1217, ctx-f951d8a4]) (logid:63df11b4) applying default firewall egress rules
2026-09-07 11:14:27,263 INFO  [o.a.c.f.e.n.NetworkExtensionElement] (Work-Job-Executor-63:[ctx-806840fb, job-1216/job-1217, ctx-f951d8a4]) (logid:63df11b4) applyFWRules: network=Network {"id": 227, "name": "test6", "uuid": "2e690dff-8d4e-4603-8454-7e06672bdc56", "networkofferingid": 40} activeRules=0 defaultEgressAllow=true
2026-09-07 11:14:27,263 INFO  [o.a.c.f.e.n.NetworkExtensionElement] (Work-Job-Executor-63:[ctx-806840fb, job-1216/job-1217, ctx-f951d8a4]) (logid:63df11b4) Ensuring network device for network Network {"id": 227, "name": "test6", "uuid": "2e690dff-8d4e-4603-8454-7e06672bdc56", "networkofferingid": 40} (current={"host":"192.168.55.179","namespace":"cs-net-227"})
2026-09-07 11:14:27,565 DEBUG [o.a.c.f.e.n.NetworkExtensionElement] (Work-Job-Executor-63:[ctx-806840fb, job-1216/job-1217, ctx-f951d8a4]) (logid:63df11b4) Script output: {"host":"192.168.55.179","namespace":"cs-net-227"}
2026-09-07 11:14:29,149 DEBUG [o.a.c.f.e.n.NetworkExtensionElement] (Work-Job-Executor-63:[ctx-806840fb, job-1216/job-1217, ctx-f951d8a4]) (logid:63df11b4) Script output: apply-fw-rules: built 0 ingress rule(s) across 0 public IP(s), 0 egress rule(s), default_egress=ALLOW, default-DROP chains for 0 static-NAT IP(s) with no rules
2026-09-07 11:14:29,149 DEBUG [o.a.c.f.e.n.NetworkExtensionElement] (Work-Job-Executor-63:[ctx-806840fb, job-1216/job-1217, ctx-f951d8a4]) (logid:63df11b4) Ignoring non-JSON script output: apply-fw-rules: built 0 ingress rule(s) across 0 public IP(s), 0 egress rule(s), default_egress=ALLOW, default-DROP chains for 0 static-NAT IP(s) with no rules
2026-09-07 11:14:29,155 INFO  [o.a.c.f.e.n.NetworkExtensionElement] (Work-Job-Executor-63:[ctx-806840fb, job-1216/job-1217, ctx-f951d8a4]) (logid:63df11b4) Applying 1 IPs for network Network {"id": 227, "name": "test6", "uuid": "2e690dff-8d4e-4603-8454-7e06672bdc56", "networkofferingid": 40}
2026-09-07 11:14:29,156 INFO  [o.a.c.f.e.n.NetworkExtensionElement] (Work-Job-Executor-63:[ctx-806840fb, job-1216/job-1217, ctx-f951d8a4]) (logid:63df11b4) Ensuring network device for network Network {"id": 227, "name": "test6", "uuid": "2e690dff-8d4e-4603-8454-7e06672bdc56", "networkofferingid": 40} (current={"host":"192.168.55.179","namespace":"cs-net-227"})
2026-09-07 11:14:29,463 DEBUG [o.a.c.f.e.n.NetworkExtensionElement] (Work-Job-Executor-63:[ctx-806840fb, job-1216/job-1217, ctx-f951d8a4]) (logid:63df11b4) Script output: {"host":"192.168.55.179","namespace":"cs-net-227"}
2026-09-07 11:14:31,012 INFO  [o.a.c.f.e.n.NetworkExtensionElement] (Work-Job-Executor-63:[ctx-806840fb, job-1216/job-1217, ctx-f951d8a4]) (logid:63df11b4) Ensuring network device for network Network {"id": 227, "name": "test6", "uuid": "2e690dff-8d4e-4603-8454-7e06672bdc56", "networkofferingid": 40} (current={"host":"192.168.55.179","namespace":"cs-net-227"})
2026-09-07 11:14:31,319 DEBUG [o.a.c.f.e.n.NetworkExtensionElement] (Work-Job-Executor-63:[ctx-806840fb, job-1216/job-1217, ctx-f951d8a4]) (logid:63df11b4) Script output: {"host":"192.168.55.179","namespace":"cs-net-227"}
2026-09-07 11:14:33,117 DEBUG [c.c.c.CapacityManagerImpl] (Work-Job-Executor-63:[ctx-806840fb, job-1216/job-1217, ctx-f951d8a4]) (logid:63df11b4) Hosts's actual total CPU: 12748 and CPU after applying overprovisioning: 12748
2026-09-07 11:14:33,117 DEBUG [c.c.c.CapacityManagerImpl] (Work-Job-Executor-63:[ctx-806840fb, job-1216/job-1217, ctx-f951d8a4]) (logid:63df11b4) Hosts's actual total RAM: (6.57 GB) 7053959168 and RAM after applying overprovisioning: (6.57 GB) 7053959168
2026-09-07 11:14:34,682 DEBUG [c.c.c.CapacityManagerImpl] (Work-Job-Executor-64:[ctx-69cc0292, job-1216/job-1218, ctx-c4e49f32, FirstFitRoutingAllocator]) (logid:63df11b4) Hosts's actual total CPU: 12748 and CPU after applying overprovisioning: 12748
2026-09-07 11:14:34,709 DEBUG [c.c.c.CapacityManagerImpl] (Work-Job-Executor-64:[ctx-69cc0292, job-1216/job-1218, ctx-c4e49f32]) (logid:63df11b4) Hosts's actual total CPU: 12748 and CPU after applying overprovisioning: 12748
2026-09-07 11:14:34,711 DEBUG [c.c.c.CapacityManagerImpl] (Work-Job-Executor-64:[ctx-69cc0292, job-1216/job-1218, ctx-c4e49f32]) (logid:63df11b4) Hosts's actual total CPU: 12748 and CPU after applying overprovisioning: 12748
2026-09-07 11:14:34,711 DEBUG [c.c.c.CapacityManagerImpl] (Work-Job-Executor-64:[ctx-69cc0292, job-1216/job-1218, ctx-c4e49f32]) (logid:63df11b4) Hosts's actual total CPU: 12748 and CPU after applying overprovisioning: 12748
2026-09-07 11:14:34,751 INFO  [o.a.c.f.e.n.NetworkExtensionElement] (Work-Job-Executor-64:[ctx-69cc0292, job-1216/job-1218, ctx-c4e49f32]) (logid:63df11b4) Implementing network extension for network Network {"id": 227, "name": "test6", "uuid": "2e690dff-8d4e-4603-8454-7e06672bdc56", "networkofferingid": 40} (VLAN null)
2026-09-07 11:14:34,751 INFO  [o.a.c.f.e.n.NetworkExtensionElement] (Work-Job-Executor-64:[ctx-69cc0292, job-1216/job-1218, ctx-c4e49f32]) (logid:63df11b4) Ensuring network device for network Network {"id": 227, "name": "test6", "uuid": "2e690dff-8d4e-4603-8454-7e06672bdc56", "networkofferingid": 40} (current={})
2026-09-07 11:14:35,058 DEBUG [o.a.c.f.e.n.NetworkExtensionElement] (Work-Job-Executor-64:[ctx-69cc0292, job-1216/job-1218, ctx-c4e49f32]) (logid:63df11b4) Script output: {"host":"192.168.55.179","namespace":"cs-net-227"}
2026-09-07 11:14:35,084 INFO  [o.a.c.f.e.n.NetworkExtensionElement] (Work-Job-Executor-64:[ctx-69cc0292, job-1216/job-1218, ctx-c4e49f32]) (logid:63df11b4) Ensuring network device for network Network {"id": 227, "name": "test6", "uuid": "2e690dff-8d4e-4603-8454-7e06672bdc56", "networkofferingid": 40} (current={"host":"192.168.55.179","namespace":"cs-net-227"})
2026-09-07 11:14:35,391 DEBUG [o.a.c.f.e.n.NetworkExtensionElement] (Work-Job-Executor-64:[ctx-69cc0292, job-1216/job-1218, ctx-c4e49f32]) (logid:63df11b4) Script output: {"host":"192.168.55.179","namespace":"cs-net-227"}
2026-09-07 11:14:36,929 DEBUG [o.a.c.f.e.n.NetworkExtensionElement] (Work-Job-Executor-64:[ctx-69cc0292, job-1216/job-1218, ctx-c4e49f32]) (logid:63df11b4) Script output: Cannot find device "vn--227"
2026-09-07 11:14:36,929 ERROR [o.a.c.f.e.n.NetworkExtensionElement] (Work-Job-Executor-64:[ctx-69cc0292, job-1216/job-1218, ctx-c4e49f32]) (logid:63df11b4) Network extension script implement-network failed with exit code 3: Cannot find device "vn--227"
2026-09-07 11:14:36,978 DEBUG [c.c.n.f.FirewallManagerImpl] (Work-Job-Executor-64:[ctx-69cc0292, job-1216/job-1218, ctx-c4e49f32]) (logid:63df11b4) applying default firewall egress rules
2026-09-07 11:14:36,982 INFO  [o.a.c.f.e.n.NetworkExtensionElement] (Work-Job-Executor-64:[ctx-69cc0292, job-1216/job-1218, ctx-c4e49f32]) (logid:63df11b4) applyFWRules: network=Network {"id": 227, "name": "test6", "uuid": "2e690dff-8d4e-4603-8454-7e06672bdc56", "networkofferingid": 40} activeRules=0 defaultEgressAllow=true
2026-09-07 11:14:36,982 INFO  [o.a.c.f.e.n.NetworkExtensionElement] (Work-Job-Executor-64:[ctx-69cc0292, job-1216/job-1218, ctx-c4e49f32]) (logid:63df11b4) Ensuring network device for network Network {"id": 227, "name": "test6", "uuid": "2e690dff-8d4e-4603-8454-7e06672bdc56", "networkofferingid": 40} (current={"host":"192.168.55.179","namespace":"cs-net-227"})
2026-09-07 11:14:37,288 DEBUG [o.a.c.f.e.n.NetworkExtensionElement] (Work-Job-Executor-64:[ctx-69cc0292, job-1216/job-1218, ctx-c4e49f32]) (logid:63df11b4) Script output: {"host":"192.168.55.179","namespace":"cs-net-227"}
2026-09-07 11:14:38,864 DEBUG [o.a.c.f.e.n.NetworkExtensionElement] (Work-Job-Executor-64:[ctx-69cc0292, job-1216/job-1218, ctx-c4e49f32]) (logid:63df11b4) Script output: apply-fw-rules: built 0 ingress rule(s) across 0 public IP(s), 0 egress rule(s), default_egress=ALLOW, default-DROP chains for 0 static-NAT IP(s) with no rules
2026-09-07 11:14:38,864 DEBUG [o.a.c.f.e.n.NetworkExtensionElement] (Work-Job-Executor-64:[ctx-69cc0292, job-1216/job-1218, ctx-c4e49f32]) (logid:63df11b4) Ignoring non-JSON script output: apply-fw-rules: built 0 ingress rule(s) across 0 public IP(s), 0 egress rule(s), default_egress=ALLOW, default-DROP chains for 0 static-NAT IP(s) with no rules
2026-09-07 11:14:38,868 INFO  [o.a.c.f.e.n.NetworkExtensionElement] (Work-Job-Executor-64:[ctx-69cc0292, job-1216/job-1218, ctx-c4e49f32]) (logid:63df11b4) Applying 1 IPs for network Network {"id": 227, "name": "test6", "uuid": "2e690dff-8d4e-4603-8454-7e06672bdc56", "networkofferingid": 40}
2026-09-07 11:14:38,868 INFO  [o.a.c.f.e.n.NetworkExtensionElement] (Work-Job-Executor-64:[ctx-69cc0292, job-1216/job-1218, ctx-c4e49f32]) (logid:63df11b4) Ensuring network device for network Network {"id": 227, "name": "test6", "uuid": "2e690dff-8d4e-4603-8454-7e06672bdc56", "networkofferingid": 40} (current={"host":"192.168.55.179","namespace":"cs-net-227"})
2026-09-07 11:14:39,170 DEBUG [o.a.c.f.e.n.NetworkExtensionElement] (Work-Job-Executor-64:[ctx-69cc0292, job-1216/job-1218, ctx-c4e49f32]) (logid:63df11b4) Script output: {"host":"192.168.55.179","namespace":"cs-net-227"}
2026-09-07 11:14:40,738 INFO  [o.a.c.f.e.n.NetworkExtensionElement] (Work-Job-Executor-64:[ctx-69cc0292, job-1216/job-1218, ctx-c4e49f32]) (logid:63df11b4) Ensuring network device for network Network {"id": 227, "name": "test6", "uuid": "2e690dff-8d4e-4603-8454-7e06672bdc56", "networkofferingid": 40} (current={"host":"192.168.55.179","namespace":"cs-net-227"})
2026-09-07 11:14:41,046 DEBUG [o.a.c.f.e.n.NetworkExtensionElement] (Work-Job-Executor-64:[ctx-69cc0292, job-1216/job-1218, ctx-c4e49f32]) (logid:63df11b4) Script output: {"host":"192.168.55.179","namespace":"cs-net-227"}
2026-09-07 11:14:42,881 DEBUG [c.c.c.CapacityManagerImpl] (Work-Job-Executor-64:[ctx-69cc0292, job-1216/job-1218, ctx-c4e49f32]) (logid:63df11b4) Hosts's actual total CPU: 12748 and CPU after applying overprovisioning: 12748
2026-09-07 11:14:42,881 DEBUG [c.c.c.CapacityManagerImpl] (Work-Job-Executor-64:[ctx-69cc0292, job-1216/job-1218, ctx-c4e49f32]) (logid:63df11b4) Hosts's actual total RAM: (6.57 GB) 7053959168 and RAM after applying overprovisioning: (6.57 GB) 7053959168

*************************** 28. row ***************************
                            id: 227
                          name: test6
                          uuid: 2e690dff-8d4e-4603-8454-7e06672bdc56
                  display_text: test6
                  traffic_type: Guest
         broadcast_domain_type: Vlan
                 broadcast_uri: NULL
                       gateway: 10.1.1.1
                          cidr: 10.1.1.0/24
                          mode: Dhcp
           network_offering_id: 40
           physical_network_id: 200
                data_center_id: 1
                     guru_name: NetworkExtensionGuestNetworkGuru
                         state: Allocated
                       related: 227
                     domain_id: 1
                    account_id: 2
                          dns1: 8.8.8.8
                          dns2: NULL
                       ip6dns1: NULL
                       ip6dns2: NULL
                     guru_data: NULL
                    set_fields: 0
                      acl_type: Account
                network_domain: cs2cloud.internal
                reservation_id: f9fe4b5c-831e-4903-9258-7ab5338e27bd
                    guest_type: Isolated
              restart_required: 0
                       created: 2026-09-07 10:31:15
                       removed: NULL
             specify_ip_ranges: 0
                        vpc_id: NULL
                   ip6_gateway: NULL
                      ip6_cidr: NULL
                  network_cidr: NULL
               display_network: 1
                network_acl_id: NULL
                   streched_l2: 0
                     redundant: 0
                   external_id: NULL
                    public_mtu: 1500
                   private_mtu: 1500
keep_mac_address_on_public_nic: 1

What to do about it?

The vlan information of the guest network should be persisted in the database so that the vlan

Root cause found

NetworkExtensionGuestNetworkGuru.implement() (server/src/main/java/com/cloud/network/guru/NetworkExtensionGuestNetworkGuru.java:104-120):

public Network implement(final Network network, final NetworkOffering offering, final DeployDestination dest, final ReservationContext context)
        throws InsufficientVirtualNetworkCapacityException {
    ...
    // The broadcast_domain_type and broadcast_uri are set by the extension script output
    final NetworkVO implemented = getNetworkVO(network, offering, physicalNetworkId);
    return implemented;
}

private static NetworkVO getNetworkVO(Network network, NetworkOffering offering, Long physicalNetworkId) {
    final NetworkVO implemented = new NetworkVO(...);
    ...
    if (network.getBroadcastUri() != null) {
        implemented.setBroadcastUri(network.getBroadcastUri());   // only copies through — never allocates
    }
    return implemented;
}

Compare to the parent it extends, GuestNetworkGuru.implement() (server/src/main/java/com/cloud/network/guru/GuestNetworkGuru.java:398), which calls allocateVnet():

protected void allocateVnet(final Network network, final NetworkVO implemented, final long dcId, final long physicalNetworkId, final String reservationId)
        throws InsufficientVirtualNetworkCapacityException {
    if (network.getBroadcastUri() == null) {
        final String vnet = _dcDao.allocateVnet(dcId, physicalNetworkId, network.getAccountId(), reservationId, ...);
        implemented.setBroadcastUri(BUri(vnet));   // auto-allocates a fresh
VLAN
    } else {
        implemented.setBroadcastUri(n
    }
}

[weizhouapache]

@kiranchavala
can you share the network extension details and physical network extension details ?

[kiranchavala]

@weizhouapache

(localcloud) 🐱 > list extensions
{
  "count": 4,
  "extension": [
    {
      "created": "2026-09-04T06:13:21+0000",
      "details": {
        "network.isolation.method": "NetworkExtension",
        "network.service.capabilities": "{\"SourceNat\":{\"SupportedSourceNatTypes\":\"peraccount\",\"RedundantRouter\":\"false\"},\"StaticNat\":{\"Supported\":\"true\"},\"PortForwarding\":{\"SupportedProtocols\":\"tcp,udp\"},\"Firewall\":{\"TrafficStatistics\":\"per public ip\",\"SupportedProtocols\":\"tcp,udp,icmp\",\"SupportedEgressProtocols\":\"tcp,udp,icmp,all\",\"SupportedTrafficDirection\":\"ingress,egress\",\"MultipleIps\":\"true\"},\"Lb\":{\"SupportedLBAlgorithms\":\"roundrobin,leastconn,source\",\"SupportedLBIsolation\":\"dedicated\",\"SupportedProtocols\":\"tcp,udp,tcp-proxy\",\"SupportedStickinessMethods\":\"lbcookie,appsession\",\"LbSchemes\":\"Public\",\"SslTermination\":\"false\",\"VmAutoScaling\":\"false\"},\"Dhcp\":{\"DhcpAccrossMultipleSubnets\":\"true\"},\"Dns\":{\"AllowDnsSuffixModification\":\"true\",\"ExternalDns\":\"true\"},\"NetworkACL\":{\"SupportedProtocols\":\"tcp,udp,icmp\"},\"UserData\":{\"Supported\":\"true\"}}",
        "network.services": "Dhcp,Dns,UserData,SourceNat,StaticNat,PortForwarding,Firewall,Lb,NetworkACL,CustomAction"
      },
      "id": "e9593389-c481-418e-ae5a-1327fb04c3cd",
      "isuserdefined": true,
      "name": "netns",
      "path": "/usr/share/cloudstack-management/extensions/netns/netns.sh",
      "pathready": true,
      "resources": [
        {
          "created": "2026-09-04T07:02:34+0000",
          "details": {
            "guest.network.device": "eth0",
            "hosts": "192.168.55.179,192.168.55.125,192.168.55.159",
            "public.network.device": "eth0",
            "username": "root"
          },
          "id": "3f924fc3-fed7-46a1-af3f-55f9a0a00ffa",
          "name": "Physical Network 1",
          "type": "PhysicalNetwork"
        }
      ],
      "state": "Enabled",
      "type": "NetworkOrchestrator"
    },


(localcloud) 🐱 > list physicalnetworks
{
  "count": 1,
  "physicalnetwork": [
    {
      "broadcastdomainrange": "ZONE",
      "id": "3f924fc3-fed7-46a1-af3f-55f9a0a00ffa",
      "isolationmethods": "VLAN",
      "name": "Physical Network 1",
      "state": "Enabled",
      "vlan": "200-300",
      "zoneid": "157cb8ca-1c40-4a1f-a737-8bddb1dcb2fd",
      "zonename": "Test-zone"
    }
  ]
}

(localcloud) 🐱 > listNetworkServiceProviders physicalnetworkid=3f924fc3-fed7-46a1-af3f-55f9a0a00ffa name=netns
{
  "count": 1,
  "networkserviceprovider": [
    {
      "canenableindividualservice": true,
      "id": "74e7fcb4-f8bb-409a-8274-a90c0616e3f0",
      "name": "netns",
      "physicalnetworkid": "3f924fc3-fed7-46a1-af3f-55f9a0a00ffa",
      "servicelist": [
        "Dhcp",
        "Dns",
        "Firewall",
        "Lb",
        "SourceNat",
        "StaticNat",
        "PortForwarding",
        "NetworkACL",
        "UserData",
        "CustomAction"
      ],
      "state": "Enabled"
    }
  ]
}


(localcloud) 🐱 > list networkofferings name=netns3
{
  "count": 1,
  "networkoffering": [
    {
      "availability": "Optional",
      "conservemode": true,
      "created": "2026-09-07T07:29:29+0000",
      "details": {
        "internetProtocol": "IPv4"
      },
      "displaytext": "netns3",
      "egressdefaultpolicy": true,
      "fornsx": false,
      "fortungsten": false,
      "forvpc": false,
      "guestiptype": "Isolated",
      "hasannotations": false,
      "id": "0adfb4d1-7761-41ac-8dc4-2c0558f3952f",
      "internetprotocol": "IPv4",
      "isdefault": false,
      "ispersistent": false,
      "maxconnections": 4096,
      "name": "netns3",
      "networkrate": 200,
      "service": [
        {
          "name": "CustomAction",
          "provider": [
            {
              "name": "netns"
            }
          ]
        },
        {
          "name": "Dns",
          "provider": [
            {
              "name": "netns"
            }
          ]
        },
        {
          "capability": [
            {
              "canchooseservicecapability": false,
              "name": "SupportedLBIsolation",
              "value": "dedicated"
            },
            {
              "canchooseservicecapability": false,
              "name": "ElasticLb",
              "value": "false"
            },
            {
              "canchooseservicecapability": false,
              "name": "InlineMode",
              "value": "false"
            },
            {
              "canchooseservicecapability": false,
              "name": "VmAutoScaling",
              "value": "false"
            }
          ],
          "name": "Lb",
          "provider": [
            {
              "name": "netns"
            }
          ]
        },
        {
          "name": "PortForwarding",
          "provider": [
            {
              "name": "netns"
            }
          ]
        },
        {
          "name": "UserData",
          "provider": [
            {
              "name": "netns"
            }
          ]
        },
        {
          "capability": [
            {
              "canchooseservicecapability": false,
              "name": "SupportedSourceNatTypes",
              "value": "peraccount"
            },
            {
              "canchooseservicecapability": false,
              "name": "RedundantRouter",
              "value": "false"
            }
          ],
          "name": "SourceNat",
          "provider": [
            {
              "name": "netns"
            }
          ]
        },
        {
          "capability": [
            {
              "canchooseservicecapability": false,
              "name": "ElasticIp",
              "value": "false"
            },
            {
              "canchooseservicecapability": false,
              "name": "AssociatePublicIP",
              "value": "false"
            }
          ],
          "name": "StaticNat",
          "provider": [
            {
              "name": "netns"
            }
          ]
        },
        {
          "name": "Dhcp",
          "provider": [
            {
              "name": "netns"
            }
          ]
        },
        {
          "name": "Firewall",
          "provider": [
            {
              "name": "netns"
            }
          ]
        }
      ],
      "serviceofferingid": "cf6747dc-60b3-43af-be4e-1d2aeea4eaf0",
      "specifyasnumber": false,
      "specifyipranges": false,
      "specifyvlan": true,
      "state": "Enabled",
      "supportsinternallb": false,
      "supportspublicaccess": false,
      "supportsstrechedl2subnet": false,
      "traffictype": "Guest"
    }
  ]
}

[weizhouapache]

@kiranchavala
can you remove this extension ?

        "network.isolation.method": "NetworkExtension",

when it is set, the network extension will set up the isolation (for example, vlan allocation, ovn tunnel).
it looks like doc needs ot be updated