Describe the bug
运行十天左右top显示占用300%cpu。实际nps的服务只有我一个人在用，不应该这么高

Tasks: 170 total,   1 running, 169 sleeping,   0 stopped,   0 zombie
%Cpu(s): 75.2 us,  0.1 sy,  0.0 ni, 24.8 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
MiB Mem :    984.1 total,    342.0 free,    277.8 used,    364.3 buff/cache
MiB Swap:    492.1 total,    436.1 free,     56.0 used.    652.7 avail Mem 

    PID USER      PR  NI    VIRT    RES    SHR S  %CPU  %MEM     TIME+ COMMAND                                                                 
    994 root      20   0  716360  49196   4548 S 299.3   4.9   8965:32 npc                                                                     
    165 root     -91   0       0      0      0 S   0.3   0.0  24:09.25 sdiohal_rx_thre                                                         
 622405 root      20   0    9948   3476   2740 R   0.3   0.3   0:00.18 top   

root@orangepizero2:/var/log# /usr/local/npc/npc stop
2023/06/13 19:29:31.483 [E] [npc.go:139]  Valid actions: ["start" "stop" "restart" "install" "uninstall"]
Failed to stop nps内网穿透客户端: exit status 5
root@orangepizero2:/var/log# /usr/local/npc/npc restart
2023/06/13 19:29:37.022 [E] [npc.go:139]  Valid actions: ["start" "stop" "restart" "install" "uninstall"]
Failed to restart nps内网穿透客户端: exit status 5

To Reproduce
长时间运行后可出现

Expected behavior
为什么占用高，以及如何重启

Screenshots or logs
npc.log有未知的ip尝试连接日志，但并发不高

Server (please complete the following information):

• OS: centos
• ARCH: x86_64
• Tunnel TCP
• Version 0.24.9
• [root@iZwz9539thiyesewc0sk83Z log]# lsb_release -a
  LSB Version: :core-4.1-amd64:core-4.1-noarch
  Distributor ID: AlibabaCloud
  Description: Alibaba Cloud Linux release 3 (Soaring Falcon)
  Release: 3
  Codename: SoaringFalcon

Client (please complete the following information):

• OS: ubuntu
• ARCH: aarch64
• Tunnel TCP
• Version 0.24.9
• root@orangepizero2:/var/log# lsb_release -a
  No LSB modules are available.
  Distributor ID: Ubuntu
  Description: Ubuntu 22.04.2 LTS
  Release: 22.04
  Codename: jammy

Additional context
Add any other context about the problem here.