xuanyuanaosheng opened a new issue, #7639:
URL: https://github.com/apache/cloudstack/issues/7639
##### ISSUE TYPE
* Bug Report
##### COMPONENT NAME
* Virtual routers
##### CLOUDSTACK VERSION
CloudStack 4.17.2.0
##### CONFIGURATION
- advanced networking, having two hosts name is _**kvm001**_ and
_**kvm002**_
- Create a VPC name is **_test_**, the details info is

- The instances in VPC
java001 ( 10.65.13.57 ) on host kvm001
java002 ( 10.65.13.135 ) on host kvm002
php001 ( 10.65.14.69 ) on host kvm001
php002 ( 10.65.14.15 ) on host kvm002

- The instance connection problem:
java001 can ping php001, but can not ping java002 and php002.

The vm can only ping the vm on same hosts.
##### OS / ENVIRONMENT
OS: oracle linux 8
##### STEPS TO REPRODUCE
##### EXPECTED RESULTS
The "Virtual routers" works fine.
The similar issue:
1. https://github.com/apache/cloudstack/issues/6702
2. https://github.com/apache/cloudstack/issues/5138
##### ACTUAL RESULTS
The error
1. Router displaying error
```
"Failed to start Conntrack Deamon"
```
2. The alerts description:
```
More than one redundant virtual router is in PRIMARY state! Router
r-30765-VM and router r-30764-VM
```
Please see the picture:



How to repair this problem ?
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