180-increase-arp-caches

#!/usr/bin/lua

require 'luci.sys'
local sysctl = require 'gluon.sysctl'

if (tonumber(luci.sys.exec('sysctl net.ipv4.neigh.default.gc_thresh1'):match('%d+', 34)) or 128) < 192 then
  sysctl.set('net.ipv4.neigh.default.gc_thresh1', 192)
end
if (tonumber(luci.sys.exec('sysctl net.ipv4.neigh.default.gc_thresh2'):match('%d+', 34)) or 512) < 640 then
  sysctl.set('net.ipv4.neigh.default.gc_thresh2', 640)
end
if (tonumber(luci.sys.exec('sysctl net.ipv4.neigh.default.gc_thresh3'):match('%d+', 34)) or 1024) < 1280 then
  sysctl.set('net.ipv4.neigh.default.gc_thresh3', 1280)
end
if (tonumber(luci.sys.exec('sysctl net.ipv6.neigh.default.gc_thresh1'):match('%d+', 34)) or 128) < 512 then
  sysctl.set('net.ipv6.neigh.default.gc_thresh1', 512)
end
if (tonumber(luci.sys.exec('sysctl net.ipv6.neigh.default.gc_thresh2'):match('%d+', 34)) or 512) < 1024 then
  sysctl.set('net.ipv6.neigh.default.gc_thresh2', 1024)
end
if (tonumber(luci.sys.exec('sysctl net.ipv6.neigh.default.gc_thresh3'):match('%d+', 34)) or 1024) < 1536 then
  sysctl.set('net.ipv6.neigh.default.gc_thresh3', 1536)
end

os.execute('sync; sysctl -qp')