What were you trying to do that didn't work?

Migrate vm with specified disk port, it failed at the second migration.

Please provide the package NVR for which bug is seen:

libvirt-9.10.0-1.el9.x86_64

How reproducible:

100%

Steps to reproduce

1. Start a vm using local storage
2. Migrate vm to target host with specified disk port

   #  virsh migrate vm2 qemu+ssh://{target_host}/system --live --p2p --copy-storage-all --disks-port 49888
   

1. After migration completes, shutdown vm on target host
2. Start vm on source host, migrate again with specified disk port, it failed:

   #  virsh migrate vm2 qemu+ssh://{target_host}/system --live --p2p --copy-storage-all --disks-port 49888
   error: internal error: Failed to reserve port 49888
   

1. Migrate again, it can succeed this time:

   #  virsh migrate vm2 qemu+ssh://{target_host}/system --live --p2p --copy-storage-all --disks-port 49888
   

Expected results

No such error "Failed to reserve port 49888"

Actual results

The second migration failed.