startup.lua

local net = peripheral.wrap("back")
local strength = 0
net.open(1)
net.open(2)
while true do
local event, ms, sc, replyc, message, sd = os.pullEvent("modem_message")
local ns, ruid, content = split(message, "%5%")
if ruid == "89e778f6999f4e091c849cb773e60469" then
  if content == "uno" then
    net.transmit(replyc, sc, "dous")
  end
elseif ns < strength then
  net.transmit(sc, replyc, message)
end
end