Cisco Anyconnect WSL DNS fix

fix_wsl_dns.ps1

echo "Getting DNS nameservers"

$ns = Get-DnsClientServerAddress -AddressFamily IPv4 | Select-Object -ExpandProperty ServerAddresses | %{ "nameserver " + $_;}

echo "Getting search domains"
$sd = Get-DnsClientGlobalSetting | Select-Object -ExpandProperty SuffixSearchList | %{ "search " + $_;}

echo "-----------------------"
echo $ns
echo $sd
echo "-----------------------"
Read-Host -Prompt 'Hit enter after you copy the above text in wsl /etc/resolv.conf'

echo "Changing InterfaceMetric for Cisco Anyconnect"
Get-NetAdapter | Where-Object {$_.InterfaceDescription -Match "Cisco AnyConnect"} | Set-NetIPInterface -InterfaceMetric 6000


# get wsl process
$wsl = Get-Process wsl -ErrorAction SilentlyContinue
$continue = "n"

if ($wsl) {
    echo "wsl is running. You may want to save any incomplete work before proceeding"
while($continue -eq 'n') {
    $continue = Read-Host -Prompt 'Should I restart wsl'
    }
}
remove-variable wsl
echo "Restarting wsl"
Restart-Service LxssManager