diff --git a/shm_actions_script.sh b/shm_actions_script.sh
index de73931..b8a5caa 100755
--- a/shm_actions_script.sh
+++ b/shm_actions_script.sh
@@ -18,6 +18,7 @@ echo "EVENT=$EVENT"
 case $EVENT in
     INIT)
         SERVER_HOST="{{ server.settings.host_name }}"
+        SERVER_INTERFACE="{{ server.settings.host_interface }}"
         if [ -z $SERVER_HOST ]; then
             echo "ERROR: set variable 'host_name' to server settings"
             exit 1
@@ -40,7 +41,11 @@ case $EVENT in
         cd /etc/wireguard
         $CURL -s --fail-with-body https://danuk.github.io/wg-manager/wg-manager.sh > $WG_MANAGER
         chmod 700 $WG_MANAGER
-        $WG_MANAGER -i -s $SERVER_HOST
+        if [ $SERVER_INTERFACE ]; then
+            $WG_MANAGER -i -s $SERVER_HOST -I $SERVER_INTERFACE
+        else
+            $WG_MANAGER -i -s $SERVER_HOST
+        fi
         ;;
     CREATE)
         USER_CFG=$($WG_MANAGER -u "{{ us.id }}" -c -p)
diff --git a/wg-manager.sh b/wg-manager.sh
index 9af459c..da415e6 100755
--- a/wg-manager.sh
+++ b/wg-manager.sh
@@ -21,6 +21,7 @@ function usage {
   echo " -q : Print user QR code"
   echo " -u <user> : User identifier (uniq field for vpn account)"
   echo " -s <server> : Server host for user connection"
+  echo " -I : Interface (default eth0)"
   echo " -h : Usage"
   exit 1
 }
@@ -28,7 +29,13 @@ function usage {
 unset USER
 umask 0077
 
-while getopts ":icdpqhLUu:s:" opt; do
+HOME_DIR="/etc/wireguard"
+SERVER_NAME="wg-server"
+SERVER_IP_PREFIX="10.10.10"
+SERVER_PORT=39547
+SERVER_INTERFACE="eth0" # ens4
+
+while getopts ":icdpqhLUu:I:s:" opt; do
   case $opt in
      i) INIT=1 ;;
      c) CREATE=1 ;;
@@ -38,6 +45,7 @@ while getopts ":icdpqhLUu:s:" opt; do
      p) PRINT_USER_CONFIG=1 ;;
      q) PRINT_QR_CODE=1 ;;
      u) USER="$OPTARG" ;;
+     I) SERVER_INTERFACE="$OPTARG" ;;
      h) usage ;;
      s) SERVER_ENDPOINT="$OPTARG" ;;
     \?) echo "Invalid option: -$OPTARG" ; exit 1 ;;
@@ -47,12 +55,6 @@ done
 
 [ $# -lt 1 ] && usage
 
-HOME_DIR="/etc/wireguard"
-SERVER_NAME="wg-server"
-SERVER_IP_PREFIX="10.10.10"
-SERVER_PORT=39547
-SERVER_INTERFACE="eth0" # ens4
-
 function reload_server {
     wg syncconf ${SERVER_NAME} <(wg-quick strip ${SERVER_NAME})
 }
@@ -110,15 +112,11 @@ function init {
     mkdir -p "keys/${SERVER_NAME}"
     echo -n "$SERVER_ENDPOINT" > "keys/.server"
 
-    if [ -f "keys/${SERVER_NAME}/private.key" ]; then
-        echo "Server has already been initialized"
-        exit 0
+    if [ ! -f "keys/${SERVER_NAME}/private.key" ]; then
+        echo -n "1" > "keys/.last_ip"
+        wg genkey | tee "keys/${SERVER_NAME}/private.key" | wg pubkey > "keys/${SERVER_NAME}/public.key"
     fi
 
-    echo -n "1" > "keys/.last_ip"
-
-    wg genkey | tee "keys/${SERVER_NAME}/private.key" | wg pubkey > "keys/${SERVER_NAME}/public.key"
-
     SERVER_PVT_KEY=$(cat "keys/$SERVER_NAME/private.key")
 
 cat <<EOF > "$SERVER_NAME.conf"
@@ -136,7 +134,7 @@ EOF
     sysctl -p
 
     systemctl enable wg-quick@${SERVER_NAME}
-    wg-quick up ${SERVER_NAME}
+    wg-quick up ${SERVER_NAME} || true
 
     echo "Server initialized successfully"
     exit 0