[BUG] Cilium and VPC-DNS

[CiraciNicolo]

Kube-OVN Version

1.12.17

Kubernetes Version

v1.29.5+k3s1

Operation-system/Kernel Version

"Ubuntu 22.04.4 LTS" Linux host 5.15.0-112-generic #122-Ubuntu SMP Thu May 23 07:48:21 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux

Description

Using KubeOVN in chaining with Cilium, therefore with KubeOVN's LB disabled renders the vpn-dns feature unusable, since it is explicitly disabled here

Steps To Reproduce

1. Install Cilium and then KubeOVN as reported here
2. Create a VPC
3. Enable VPC-DNS

Current Behavior

VPC-DNS is not working since OVN LB is disabled and VPC-DNS are not scheduled, re-enabling LB will schedule the pods but SVC are not reachable with VIP ip

Expected Behavior

VPC-DNS should work