Company laptop has no internet at wake up

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1

The issue I am facing:
when I wake up (at home) the laptop of my company, I have no connection for a while. can be 3 to 20 minutes.
and after all is fine for the rest of the day.

Details about my system:
Laptop : windows 10 , no full admin rights.
Pi-Hole : on rasp 4, conditional forwarding on. upstream server : unbound no DoT or DoH
Network : DHCP by fritzbox and pi-hole ip is given as dns at dhcp lease following this page Fritz!Box (EN) - Pi-hole documentation
-rule also to only allow DNS query from pi-hole following same page.
-rebind protection exception for pi-hole
-just to mention that laptop is connected thru CPL.

output of ipconfig /all on windows :

C:\WINDOWS\system32>ipconfig /all

Configuration IP de Windows

   Nom de l’hôte . . . . . . . . . . : ITEM-S130493
   Suffixe DNS principal . . . . . . : emea.msad.sopra
   Type de noeud. . . . . . . . . .  : Pair-Pair
   Routage IP activé . . . . . . . . : Non
   Proxy WINS activé . . . . . . . . : Non
   Liste de recherche du suffixe DNS.: emea.msad.sopra
                                       fritz.box
                                       msad.sopra

Carte Ethernet Ethernet 2 :

   Suffixe DNS propre Ă  la connexion. . . : fritz.box
   Description. . . . . . . . . . . . . . : Realtek USB GbE Family Controller #2
   Adresse physique . . . . . . . . . . . : 00-50-B6-9D-C7-17
   DHCP activé. . . . . . . . . . . . . . : Oui
   Configuration automatique activée. . . : Oui
   Adresse IPv6 de liaison locale. . . . .: fe80::bc51:c08b:49a7:b6e0%16(préféré)
   Adresse IPv4. . . . . . . . . . . . . .: 192.168.178.61(préféré)
   Masque de sous-réseau. . . . . . . . . : 255.255.255.0
   Bail obtenu. . . . . . . . . . . . . . : vendredi 9 juin 2023 07:05:45
   Bail expirant. . . . . . . . . . . . . : samedi 10 juin 2023 07:05:45
   Passerelle par défaut. . . . . . . . . : 192.168.178.1
   Serveur DHCP . . . . . . . . . . . . . : 192.168.178.1
   IAID DHCPv6 . . . . . . . . . . . : 268456118
   DUID de client DHCPv6. . . . . . . . : 00-01-00-01-2A-D7-6A-73-84-69-93-93-05-16
   Serveurs DNS. . .  . . . . . . . . . . : 192.168.178.38
   NetBIOS sur Tcpip. . . . . . . . . . . : Activé
2

wondering what is principal DNS suffix? it's domain of my company. could explain?

3

These sounds all related to the laptop and not Pi-hole.
Have you tried without Pi-hole?
If its a company laptop, you should have support from your company for these kinds of issues.

Search/suffix domains are explained on the Wiki:

4

It sounds like your laptop is turning off the network adapter when it goes to sleep. When the laptop resumes, the network adapter may not wake up straight away (depends on drivers, etc).

As @deHakkelaar says since this is your company laptop you should raise this with them.

If you have approved Administrator access on your company laptop, or if this was a home user, I would suggest checking the network adapter in Device Manager and making sure that it is not being turned off.

Start > search Device Manager > expand Network adapters > find your adapter (wired or wireless) > right-click Properties > Power Management > untick Allow the computer to turn off this device to save power > OK

network_adapter_properties

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