diff --git a/modules/net/copper.lua b/modules/net/copper.lua
index e1bf669..c9e0c8d 100644
--- a/modules/net/copper.lua
+++ b/modules/net/copper.lua
@@ -1,9 +1,12 @@
 net = {}
 net.id = computer.address():sub(1,8)
 net.np = 4957
+net.cache = true
+net.cache_time = 16
+net.log = false
 net.tm = {}
 if not component.list("ocemu")() then
- _G.LKR_CACHE = true
+ net.cache = true
 end
 function net.send(id,po,msg) -- id, port, message
  if id and po and msg then
@@ -18,7 +21,7 @@ spawn("copperd",function() print(xpcall(function ()
  local fcache = {}
  local olog = log
  local function log(...)
-  if COPPER_LOG then
+  if net.log then
    olog(...)
   end
  end
@@ -73,7 +76,7 @@ spawn("copperd",function() print(xpcall(function ()
       end
      else
       if hops < 255 then
-       if fcache[dst] and _G.LKR_CACHE then
+       if fcache[dst] and net.cache then
         component.invoke(fcache[dst][1],"send",fcache[dst][2],net.np,"copper",cdlib.encode(hops+1,src,dst,data))
        else
         for k,v in ipairs(net.tm) do
@@ -87,7 +90,7 @@ spawn("copperd",function() print(xpcall(function ()
   end
   for k,v in pairs(ps) do
    if v.lt < os.time()-1 then
-    if fcache[v.nid] and _G.LKR_CACHE then
+    if fcache[v.nid] and net.cache then
      local lma = fcache[v.nid][1]
      local rma = fcache[v.nid][2]
      component.invoke(lma,"send",rma,net.np,"copper",cdlib.encode(0,net.id,v.nid,relib.encode(v)))
@@ -111,7 +114,8 @@ spawn("copperd",function() print(xpcall(function ()
    end
   end
   for k,v in pairs(fcache) do
-   if v[3] < cot - 60 then
+   if v[3] < cot - net.cache_time then
+    log(k.." derezzed")
     fcache[k] = nil
    end
   end