To create PacktVNet2, we have to take the following steps:

1. Define the variables for the first VNet:

$RG2 = "PacktResourceGroup2"
$Location2 = "West US"
$VNetName2 = "PacktVNet2"
$FESubName2 = "FrontEnd"
$BESubName2 = "Backend"
$VnetPrefix11 = "10.41.0.0/16"
$VnetPrefix12 = "10.42.0.0/16"
$FESubPrefix2 = "10.41.0.0/24"
$BESubPrefix2 = "10.42.0.0/24"
$GWSubPrefix2 = "10.42.255.0/27"
$GWName2 = "PacktVNet2Gateway"
$GWIPName2 = "PacktVNet1GWIP"
$GWIPconfName2 = "gwipconf2"
$Connection2 = "VNet2toVNet1"

2. Create a resource group:

New-AzResourceGroup -Name $RG2 -Location $Location2

3. Create subnet configurations for PacktVNet2:

$fesub2 = New-AzVirtualNetworkSubnetConfig -Name $FESubName2 -AddressPrefix $FESubPrefix2
$besub2 = New-AzVirtualNetworkSubnetConfig -Name $BESubName2 -AddressPrefix $BESubPrefix2
$gwsub2 = New-AzVirtualNetworkSubnetConfig -Name "GatewaySubnet" -AddressPrefix $GWSubPrefix2

4. Create PacktVNet2:

New-AzVirtualNetwork `
    -Name $VnetName2 `
    -ResourceGroupName $RG2 `
    -Location $Location2 `
    -AddressPrefix $VnetPrefix11,$VnetPrefix12 `
    -Subnet $fesub2,$besub2,$gwsub2

5. Request a public IP address:

$gwpip2 = New-AzPublicIpAddress `
    -Name $GWIPName2 `
    -ResourceGroupName $RG2 `
    -Location $Location2 `
    -AllocationMethod Dynamic

6. Create the gateway configuration:

$vnet2 = Get-AzVirtualNetwork `
    -Name $VnetName2 `
    -ResourceGroupName $RG2
$subnet2 = Get-AzVirtualNetworkSubnetConfig `
    -Name "GatewaySubnet" `
    -VirtualNetwork $vnet2
$gwipconf2 = New-AzVirtualNetworkGatewayIpConfig `
    -Name $GWIPconfName2 `
    -Subnet $subnet2 `
    -PublicIpAddress $gwpip2

7. Create the gateway:

New-AzVirtualNetworkGateway -Name $GWName2 `
    -ResourceGroupName $RG2 `
    -Location $Location2 `
    -IpConfigurations $gwipconf2 `
    -GatewayType Vpn `
    -VpnType RouteBased `
    -GatewaySku VpnGw1

Wait for the gateway to be created. After its creation, we can create connections between the VNets.