gluon/package/gluon-mesh-batman-adv-core/files/lib/gluon/announce/statistics.d/gateway

local gateway = ''

for line in io.lines('/sys/kernel/debug/batman_adv/bat0/gateways') do
  if line:sub(1, 3) == '=> ' then
    gateway = line:sub(4, 20)
    break
  end
end

if gateway ~= '' then
  return gateway
end