dig

# pastebin get yAvZEUUe dig.lua

request = {...}
peripheral.find("modem", rednet.open)

if #request < 2 then
    print("usage: dig <id/name> <request>")
    return 0
end

rednet.broadcast(request, "dns-querry")
dnsServerID, response = rednet.receive("dns-answer")

print(response)