In CloudStack, when creating an instance, the security group is not applied, and there are errors reported by iptables.

##### ISSUE TYPE

* Bug Report

##### COMPONENT NAME

~~~
Security groups,iptables
~~~

##### CLOUDSTACK VERSION

~~~
cloudstack 4.18.1.0
~~~

##### CONFIGURATION

##### OS / ENVIRONMENT

Centos 7.9

##### SUMMARY

A newly deployed CloudStack 4.18.1.0 agent node is experiencing issues where the security group rules are not being applied to the created instance machines. Additionally, there are errors reported by iptables.

##### STEPS TO REPRODUCE

~~~
2024-08-23 14:35:26,306 DEBUG [kvm.resource.LibvirtComputingResource] (agentRequest-Handler-3:null) (logid:20080328) Failed to get dom xml: org.libvirt.LibvirtException: Domain not found: no domain with matching name 'i-2-5292-VM'
2024-08-23 14:35:26,308 DEBUG [kvm.resource.LibvirtComputingResource] (agentRequest-Handler-3:null) (logid:20080328) Failed to get dom xml: org.libvirt.LibvirtException: Domain not found: no domain with matching name 'i-2-5292-VM'
2024-08-23 14:35:26,309 DEBUG [kvm.resource.LibvirtComputingResource] (agentRequest-Handler-3:null) (logid:20080328) Failed to get dom xml: org.libvirt.LibvirtException: Domain not found: no domain with matching name 'i-2-5292-VM'
2024-08-23 14:35:26,310 DEBUG [kvm.resource.LibvirtComputingResource] (agentRequest-Handler-3:null) (logid:20080328) Executing: /usr/share/cloudstack-common/scripts/vm/network/security_group.py destroy_network_rules_for_vm --vmname i-2-5292-VM
2024-08-23 14:35:26,312 DEBUG [kvm.resource.LibvirtComputingResource] (agentRequest-Handler-3:null) (logid:20080328) Executing while with timeout : 1800000
2024-08-23 14:35:26,808 DEBUG [kvm.resource.LibvirtComputingResource] (agentRequest-Handler-3:null) (logid:20080328) Execution is successful.
2024-08-23 14:35:26,809 DEBUG [kvm.resource.LibvirtComputingResource] (agentRequest-Handler-3:null) (logid:20080328) Chain 'i-2-5292-VM-in' doesn't exist.
Chain 'i-2-5292-VM-out' doesn't exist.
Chain 'i-2-5292-VM-in-ips' doesn't exist.
Chain 'i-2-5292-VM-out-ips' doesn't exist.
Chain 'i-2-5292-VM-in-src' doesn't exist.
Chain 'i-2-5292-VM-out-dst' doesn't exist.
iptables: No chain/target/match by that name.
iptables: No chain/target/match by that name.
iptables: No chain/target/match by that name.
iptables: No chain/target/match by that name.
iptables: No chain/target/match by that name.
iptables: No chain/target/match by that name.
ipset v7.1: The set with the given name does not exist
~~~

##### EXPECTED RESULTS

Here is an example where I created a machine on an agent node with a functioning security group. In this case, both the security group and iptables are working correctly, and there are no iptables errors reported.
~~~
2024-08-23 16:28:22,918 DEBUG [kvm.resource.LibvirtComputingResource] (agentRequest-Handler-2:null) (logid:c5363bc1) Executing: /usr/share/cloudstack-common/scripts/vm/network/security_group.py default_network_rules --vmname i-2-5310-VM --vmid 5310 --vmip 192.168.188.21 --vmmac 1e:00:c6:00:00:95 --vif vnet10 --brname cloudbr0 --nicsecips 0; --isFirstNic
2024-08-23 16:28:22,920 DEBUG [kvm.resource.LibvirtComputingResource] (agentRequest-Handler-2:null) (logid:c5363bc1) Executing while with timeout : 1800000
2024-08-23 16:28:24,427 DEBUG [kvm.resource.LibvirtComputingResource] (agentRequest-Handler-2:null) (logid:c5363bc1) Execution is successful.
2024-08-23 16:28:24,427 DEBUG [kvm.resource.LibvirtComputingResource] (agentRequest-Handler-2:null) (logid:c5363bc1) Chain 'i-2-5310-VM-in' doesn't exist.
Chain 'i-2-5310-VM-out' doesn't exist.
Chain 'i-2-5310-VM-in-ips' doesn't exist.
Chain 'i-2-5310-VM-out-ips' doesn't exist.
Chain 'i-2-5310-VM-in-src' doesn't exist.
Chain 'i-2-5310-VM-out-dst' doesn't exist.
ipset v7.1: The set with the given name does not exist
ipset v7.1: The set with the given name does not exist
Chain 'i-2-5310-VM-in' doesn't exist.
Chain 'i-2-5310-VM-out' doesn't exist.
Chain 'i-2-5310-VM-in-ips' doesn't exist.
Chain 'i-2-5310-VM-out-ips' doesn't exist.
Chain 'i-2-5310-VM-in-src' doesn't exist.
Chain 'i-2-5310-VM-out-dst' doesn't exist.
~~~

##### ACTUAL RESULTS

~~~

~~~

CentOS 7.9 エージェント上で LibvirtComputingResource のログエントリと security_group.py のコマンドから始め、失敗したログと期待されるログを比較しながら、CloudStack 4.18.1.0 でのインスタンス作成を再現します。セキュリティグループのルールがインスタンスに適用され、報告された iptables エラーが発生しなくなれば完了です。

索引モデルが issue の本文から書いたものです。