Powershell - multiple values in custom object

Question

I've been working on a script which will take IPs/DNSes and create a 2-column output. While it's working inside of powershell, as soon as I try to export to CSV it return system.object. How can I fix it? Here's my code:

function Resolve-IPDNS {
[CmdletBinding()]
param(
    [Parameter(Mandatory = $true)]
    [string[]]$IPDNS,

    [string]$DNSServer = "1.1.1.1"

)#param

BEGIN {}

Process {
    foreach ($addrs in $IPDNS ) {

        #Resolve IP or DNS
        IF ($addrs -as [ipaddress]) {
        $resolve_params = @{'Name' = $addrs
            'Server' = $DNSServer
            'Type' = 'PTR'}
        } ELSE {
            $resolve_params = @{'Name' = $addrs
            'Server' = $DNSServer
            'Type' = 'A'}
        }
        $resolve = Resolve-DnsName @resolve_params


        #Create props
        IF ($addrs -as [ipaddress]) {
            $props = @{'IP' = $resolve.Name
                'DNS' = $resolve.NameHost}
        } ELSE {
                $props = @{'IP' = $resolve.IPAddress
                    'DNS' = $resolve.Name}

            }#IF

            #Output data
            $obj = New-Object -TypeName psobject -Property $props
            Write-Output $obj

        }#foreach

    }#Process
    END {}
}#function

Resolve-IPDNS

So if try to provide bbc.com I get result:

IP                                                            DNS
--                                                            ---
{151.101.0.81, 151.101.64.81, 151.101.128.81, 151.101.192.81} {bbc.com, bbc.com, bbc.com, bbc.com}

Is there a way to expand/unwrap while keeping the object-way?

Answer 1

Make sure you iterate over each result from Resolve-DnsName:

function Resolve-IPDNS {
    [CmdletBinding()]
    param(
        [Parameter(Mandatory = $true)]
        [string[]]$IPDNS,

        [string]$DNSServer = "1.1.1.1"

    )

    Process {
        foreach($addrs in $IPDNS) {
            if($addrs -as [ipaddress]) {
                $resolve_params = @{
                    'Name'   = $addrs
                    'Server' = $DNSServer
                    'Type'   = 'PTR'
                }
            } 
            else {
                $resolve_params = @{
                    'Name'   = $addrs
                    'Server' = $DNSServer
                    'Type'   = 'A'
                }
            }

            foreach($resolve in Resolve-DnsName @resolve_params) {
                if($addrs -as [ipaddress]) {
                    $props = @{
                        'IP'  = $resolve.Name
                        'DNS' = $resolve.NameHost
                    }
                }
                else {
                    $props = @{
                        'IP'  = $resolve.IPAddress
                        'DNS' = $resolve.Name
                    }
                }

                #Output data
                $obj = New-Object -TypeName psobject -Property $props
                Write-Output $obj
            }
        }
    }
}