wido opened a new issue, #7574:
URL: https://github.com/apache/cloudstack/issues/7574
##### ISSUE TYPE
* Bug Report
##### COMPONENT NAME
~~~
KVM Agent
~~~
##### CLOUDSTACK VERSION
~~~
4.18
~~~
##### CONFIGURATION
- Advanced Networking
- FRR BGP daemon with BGP Unnumbered and VXLAN
##### OS / ENVIRONMENT
Ubuntu 22.04
##### SUMMARY
The 'control.cidr' configuration value from the agent.properties is no
longer honered and thus the subnet 169.254.0.0/16 is always used.
This conflicts with BGP Unnumbered and thus renders the network
configuration broken.
##### STEPS TO REPRODUCE
- Install KVM Agent 4.18
- Set control.cidr to 169.254.240.0/20
- See the cloud0 still gets the address 169.254.0.1/255.255.0.0
##### EXPECTED RESULTS
I would expect the CIDR to be honered.
##### LOGS
```
May 31 12:18:09 hv-pod2-r1-21 java[5559]: DEBUG [utils.script.Script]
(main:) (logid:) Executing: /bin/bash -c ip address add 169.254.0.1/255.255.0.0
dev cloud0
May 31 12:18:09 hv-pod2-r1-21 java[5559]: DEBUG [utils.script.Script]
(main:) (logid:) Cannot find device "cloud0"
May 31 12:18:09 hv-pod2-r1-21 java[5559]: DEBUG [utils.script.Script]
(main:) (logid:) Executing: /bin/bash -c ip route add 169.254.0.0/16 dev cloud0
src 169.254.0.1
May 31 12:18:09 hv-pod2-r1-21 java[5559]: DEBUG [utils.script.Script]
(main:) (logid:) Cannot find device "cloud0"
May 31 12:18:09 hv-pod2-r1-21 java[5559]: DEBUG [utils.script.Script]
(main:) (logid:) Executing: /bin/bash -c ip link add name cloud0 type bridge
May 31 12:18:09 hv-pod2-r1-21 java[5559]: DEBUG [utils.script.Script]
(main:) (logid:) Executing: /bin/bash -c ip link set cloud0 up
May 31 12:18:09 hv-pod2-r1-21 systemd-networkd[3152]: cloud0: Link UP
May 31 12:18:09 hv-pod2-r1-21 java[5559]: DEBUG [utils.script.Script]
(main:) (logid:) Executing: /bin/bash -c ip address add 169.254.0.1/255.255.0.0
dev cloud0
```
This can be observed in the logs of the KVM Agent and here we can see that
the /16 subnet is still used.
This used to work in versions prior to 4.18 and is now broken.
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