Description of problem:
virt-v2v cannot use parameter --mac to specify guest's ip

Version-Release number of selected component (if applicable):
Version-Release number of selected component (if applicable):
virt-v2v-1.42.0-5.module+el8.3.0+7152+ab3787c3.x86_64
libguestfs-1.42.0-2.module+el8.3.0+6798+ad6e66be.x86_64

How reproducible:
100%

Steps to Reproduce:
1.Check the --mac info from virt-v2v man page:
--mac aa:bb:cc:dd:ee:ff:ip:ipaddr[,gw[,len[,ns,ns,...]]]
Force a particular interface (controlled by its MAC address) to have a static IP address after boot.

The fields in the parameter are: "ipaddr" is the IP address. "gw" is the optional gateway IP address. "len" is the subnet mask length (an
integer). The final parameters are zero or more nameserver IP addresses.

2.Prepare a windows guest which dhcp client is disabled in VMWARE

3.Use virt-v2v to convert the guest to rhv

1. virt-v2v -ic vpx://root@10.73.198.169/data/10.73.199.217/?no_verify=1 esx7.0-win2019-no-dhcp -o rhv-upload -os nfs_data -of raw -b ovirtmgmt -it vddk -io vddk-libdir=/home/vmware-vix-disklib-distrib -io vddk-thumbprint=B5:52:1F:B4:21:09:45:24:51:32:56:F6:63:6A:93:5D:54:08:2D:78 -oc https://ibm-x3250m5-03.rhts.eng.pek2.redhat.com/ovirt-engine/api -op /home/rhvpasswd -oo rhv-cluster=Default -oo rhv-direct -ip /home/passwd -oo rhv-verifypeer=true -oo rhv-cafile=/home/ca.pem --mac 00:50:56:83:fe:60:ip:10.66.147.202,10.66.147.254,24
   [ 0.9] Opening the source -i libvirt -ic vpx://root@10.73.198.169/data/10.73.199.217/?no_verify=1 esx7.0-win2019-no-dhcp -it vddk -io vddk-libdir=/home/vmware-vix-disklib-distrib -io vddk-thumbprint=B5:52:1F:B4:21:09:45:24:51:32:56:F6:63:6A:93:5D:54:08:2D:78
   [ 2.5] Creating an overlay to protect the source from being modified
   [ 5.8] Opening the overlay
   [ 14.8] Inspecting the overlay
   [ 21.3] Checking for sufficient free disk space in the guest
   [ 21.3] Estimating space required on target for each disk
   [ 21.3] Converting Windows Server 2019 Standard to run on KVM
   virt-v2v: warning: /usr/share/virt-tools/pnp_wait.exe is missing.
   Firstboot scripts may conflict with PnP.
   virt-v2v: warning: there is no QXL driver for this version of Windows (10.0
   x86_64). virt-v2v looks for this driver in
   /usr/share/virtio-win/virtio-win.iso

The guest will be configured to use a basic VGA display driver.
virt-v2v: This guest has virtio drivers installed.
[ 37.1] Mapping filesystem data to avoid copying unused and blank areas
[ 38.2] Closing the overlay
[ 38.5] Assigning disks to buses
[ 38.5] Checking if the guest needs BIOS or UEFI to boot
[ 38.5] Initializing the target -o rhv-upload -oc https://ibm-x3250m5-03.rhts.eng.pek2.redhat.com/ovirt-engine/api -op /home/rhvpasswd -os nfs_data
[ 39.8] Copying disk 1/1 to qemu URI json:

(raw)
(100.00/100%)
[1720.8] Creating output metadata
[1722.4] Finishing off

4.After conversion finished successfully,boot the guest in rhv and check the ip info.
4.1 There is an error info in C:\Program Files\Guestfs\Firstboot\log.txt,pls see screenshot
4.2 Guest's ip is not specified

Actual results:
As above

Expected results:
virt-v2v can specify guest's ip when use --mac

Additional info: