diff --git a/Dockerfile b/Dockerfile
index 2b6e6362..8471cf41 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -57,8 +57,7 @@ RUN apk add --no-cache \
     ca-certificates \
     tzdata \
     nftables \
-    iproute2 \
-    dcron
+    iproute2
 
 RUN ln -sf /usr/share/zoneinfo/${TZ} /etc/localtime && \
     echo "${TZ}" > /etc/timezone
diff --git a/docker/README.md b/docker/README.md
index 2bb586dc..c3daaa64 100644
--- a/docker/README.md
+++ b/docker/README.md
@@ -57,6 +57,7 @@ docker run -d \
   --cap-add NET_ADMIN \
   --cap-add NET_RAW \
   --cap-add SYS_ADMIN \
+  --sysctl net.ipv4.ip_forward=1 \
   --device /dev/net/tun:/dev/net/tun \
   --restart unless-stopped \
   juewuy/shellcrash:latest
diff --git a/docker/compose.yml b/docker/compose.yml
index 8c59972a..d246815b 100644
--- a/docker/compose.yml
+++ b/docker/compose.yml
@@ -14,7 +14,8 @@ services:
     devices:
       - "/dev/net/tun:/dev/net/tun"
     sysctls:
-      net.ipv4.ip_forward: 1
+      - net.ipv4.ip_forward: 1
+      # - net.ipv6.conf.all.forwarding=1
     volumes:
       - shellcrash_configs:/etc/ShellCrash/configs:rw
     restart: unless-stopped
diff --git a/scripts/libs/get_config.sh b/scripts/libs/get_config.sh
index ca2d70cf..ba9b6b08 100644
--- a/scripts/libs/get_config.sh
+++ b/scripts/libs/get_config.sh
@@ -16,7 +16,7 @@ routing_mark=$((fwmark + 2))
 
 [ -z "$dns_nameserver" ] && {
 	dns_nameserver='223.5.5.5, 1.2.4.8'
-	nslookup localhost 127.0.0.1 >/dev/null 2>&1 && dns_nameserver='127.0.0.1'
+	netstat -ntlup 2>/dev/null | grep -q '127.0.0.1:53' && dns_nameserver='127.0.0.1'
 }
 [ -z "$dns_fallback" ] && dns_fallback="1.1.1.1, 8.8.8.8"
 [ -z "$dns_resolver" ] && dns_resolver="223.5.5.5, 2400:3200::1"
diff --git a/scripts/libs/set_profile.sh b/scripts/libs/set_profile.sh
index 2bf2790e..b16966ed 100644
--- a/scripts/libs/set_profile.sh
+++ b/scripts/libs/set_profile.sh
@@ -5,4 +5,5 @@ set_profile() {
     echo "alias ${my_alias}=\"$shtype $CRASHDIR/menu.sh\"" >>"$1" #设置快捷命令环境变量
     sed -i '/export CRASHDIR=*/'d "$1"
     echo "export CRASHDIR=\"$CRASHDIR\"" >>"$1" #设置路径环境变量
+	. "$1" >/dev/null 2>&1 || true
 }
\ No newline at end of file
diff --git a/scripts/menus/ddns.sh b/scripts/menus/ddns.sh
index 3d6cebe5..ee76453f 100644
--- a/scripts/menus/ddns.sh
+++ b/scripts/menus/ddns.sh
@@ -69,23 +69,25 @@ set_ddns() {
 set_ddns_service() {
     while true; do
         services_dir=/etc/ddns/"$serv"
+		[ -s "$services_dir" ] || services_dir=/etc/ddns/services
         [ -s "$services_dir" ] || services_dir=/usr/share/ddns/list
+		[ -s "$services_dir" ] || {
+		    msg_alert "\033[33m未找到DDNS列表文件，尝试在线获取……\033[0m"
+		    ddns service update >/dev/null || msg_alert "\033[31m下载失败，请重试！\033[0m"
+		}
         comp_box "\033[32m请选择服务提供商：\033[0m"
 
-        # cat "$services_dir" | grep -v '^#' | awk '{print NR") " $1}'
-        awk '!/^#/ {print NR") " $1}' "$services_dir" |
-            while IFS= read -r line; do
-                content_line "$line"
-            done
+        list=$(awk '/^#/ || !NF {next} {print $1}' "$services_dir")
+        list_box "$list"
 
-        nr=$(cat "$services_dir" | grep -v '^#' | wc -l)
+        nr=$(echo "$list" | wc -l)
         common_back
         read -r -p "请输入对应数字> " num
         if [ -z "$num" ] || [ "$num" = 0 ]; then
             i=
             break
         elif [ "$num" -gt 0 ] && [ "$num" -lt "$nr" ]; then
-            service_name=$(cat "$services_dir" | grep -v '^#' | awk '{print $1}' | sed -n "$num"p | sed 's/"//g')
+            service_name=$(echo "$list" | sed -n "$num"p | sed 's/"//g')
             service=$(echo "$service_name" | sed 's/\./_/g')
             set_ddns
             break
diff --git a/scripts/starts/core_config.sh b/scripts/starts/core_config.sh
index 1edeb645..a5aa9813 100644
--- a/scripts/starts/core_config.sh
+++ b/scripts/starts/core_config.sh
@@ -42,6 +42,8 @@ get_core_config() { #下载内核配置文件
 		fi
         Https="${Server}/sub?target=${target}&${Server_ua}=${user_agent}&insert=true&new_name=true&scv=true&udp=true&${urlencodeUrl}"
         url_type=true
+	else
+		Https=$(echo $Https | sed 's/\\&/\&/g')   #还原转义
     fi
     #输出
     echo "-----------------------------------------------"
diff --git a/scripts/starts/start_legacy_wd.sh b/scripts/starts/start_legacy_wd.sh
index e5cdaa8e..fbc5a820 100644
--- a/scripts/starts/start_legacy_wd.sh
+++ b/scripts/starts/start_legacy_wd.sh
@@ -1,20 +1,28 @@
 
-[ -z "$CRASHDIR" ] && CRASHDIR=$( cd $(dirname $0);cd ..;pwd)
+[ -z "$CRASHDIR" ] && CRASHDIR=$(cd "$(dirname "$0")"/.. && pwd)
 PIDFILE="/tmp/ShellCrash/$1.pid"
 
 [ -f "$CRASHDIR"/.start_error ] && [ ! -f /tmp/ShellCrash/crash_start_time ] && exit 1 #当启动失败后禁止开机自启动
 
 if [ -f "$PIDFILE" ]; then
 	PID="$(cat "$PIDFILE")"
-	if [ -n "$PID" ] && [ -d "/proc/$PID" ]; then
-		return 0
+	if [ -n "$PID" ] && [ "$PID" -eq "$PID" ] 2>/dev/null; then
+		if kill -0 "$PID" 2>/dev/null || [ -d "/proc/$PID" ]; then
+			return 0
+		fi
+	else
+		rm -f "$PIDFILE"
 	fi
 fi
+
 #如果没有进程则拉起
-if [ "$1" = shellcrash ];then
-	"$CRASHDIR"/start.sh start
-else
-	. "$CRASHDIR"/starts/start_legacy.sh
-	start_legacy "$CRASHDIR/menus/bot_tg.sh" "$1"
+LOCKDIR="/tmp/ShellCrash/start_$1.lock"
+if mkdir "$LOCKDIR" 2>/dev/null; then
+    if [ "$1" = "shellcrash" ]; then
+        "$CRASHDIR"/start.sh start
+    else
+        [ -f "$CRASHDIR/starts/start_legacy.sh" ] && . "$CRASHDIR/starts/start_legacy.sh"
+        start_legacy "$CRASHDIR/menus/bot_tg.sh" "$1"
+    fi
+    rm -d "$LOCKDIR" 2>/dev/null
 fi
-		
\ No newline at end of file