diff --git a/PPPOE_management.md b/PPPOE_management.md
index 1e99959..63c128e 100644
--- a/PPPOE_management.md
+++ b/PPPOE_management.md
@@ -390,6 +390,7 @@ Sure you need to enable l2tp plugin and configure rest of options similar to ppp
 * put burst2d binary to /usr/local/bin
 * put burst2d.cfg to /etc from previous installation
 * put libraries to /usr/local/lib
+* copy /etc/config.json from previous installation
 
 Create and run service (runsv)
 ```