Config.vm.network parameter not taken into consideration

[salam]

I have a vagrant file as follows

config.vm.define "web" do |web|
    web.vm.boot_timeout = 1500
    web.vm.box = "generic/fedora39"
    web.vm.box_version = "4.3.12"
    web.vm.hostname = "web"
    web.vm.network "private_network", ip: "192.168.56.20"
    web.vm.network "forwarded_port", guest: 80, host: 8080 
  end

VM is created when I do
vagrant up
but ssh fails. I log to the VM in virtualbox I do ifconfig, I see an IP which is different from the one I indicated in the vagrant file.