Wired windows 10 client no see dhcp after restart

Bug
1

Recently i do a fresh nethserver 7.9 installation on a Proxmox VE. The nethserver is used like gateway and i also have running other modules and services like firewall and atuth proxy and PDC. On my green network i have installed a dhcp service and i have some wired Windows 10 client whos are joing to the domain and use nethserver like dhcp but happend me that if i restart or just suspend or maybe unpluged the wired of the client and after plugin it back again this client dont see the nethserever DHCP not matther that the client have a ip reservation or not in the nethserver dhcp place. When that happend i do and ipconfig on the windows clienyt and all is good showme all the parametter with the rigth configuration like i discribed below but when i do a ping to the nethserver the network is unrecheable but the ping to the nethserver AD ip i get response like to the Proxmox VE.
Observation

  1. I use a proxmox 6 based on debian buster and i already installed a desktop enviroment xfce on it. But i dont think that this have something to do because i test without the desktop enviroment xfce for the proxmox and i get the same result.
  2. If i do a ping from the nethserver to the client or go to the nethserver diagnostic tab and scan the green network i get response or see the windows client after that the windows client start to get connection again at the moment.

My nethwork configurations is
Proxmox VE
static ip =================192.168.15.20
Nethserver …
green interface
FQDN==========> serv1.tcg.lan
static ip=========>192,168.15.254/24
dns ==================> primary 201.220.222.131 secundary 192.168.15.254
AD & PDC =================> 192.168.15.252
AD FQDN ==================>ad.tcg.lan
nethserver dhcp server configuration
range============= 192.168.15.100-192.168.15.200
gateway===========192.168.15.254
dns===============192.168.15.252 , 192.168.15.254 (i already tray with change the dns order and i still have the same issue)
ntp=============== 192.168.15.254
search doamin====== tcg.lan

red interface
static ip ===========================> 201.220.211.246/30
gateway ===========================>201.220.211.245
dns ===============================>201.220.222.232

WINDOWS CLIENT CONFIGURATION
ip by dhcp ======================= 192.168.15.117/24
gateway========================= 192.168.15.254
primary dns======================= 192.168.15.252
secundary dns===================== 192.168.15.254
DHCP =========================== 192.168.15.254
ntp ============================= 192.168.15.254
search domain===================== tcg.lan

2

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