Pihole en Vaultwarden icm Box 14

Ik ben sinds 2 weken overgegaan van Ziggo naar KPN met een KPN box 14.

Het modem van Ziggo stond altijd in bridgemode en gebruikte daarbij een eigen modem van TP-link.

Aan het modem was een Raspberry Pi aangesloten en daarop draaide ik in docker Pihole en Vaultwarden (Bitwarden). Pihole kreeg dan via macvlan en eigen ipadres.

Via de KPN Box lukt met dat helaas niet meer. Standalone van Pihole en/of Bitwarden gaat prima maar samen via docker lukt niet.

Als ik Pihole debug kom ik de volgende netwerk foutmeldingen tegen:

*** [ DIAGNOSING ]: Network routing table
   default via 192.168.2.1 dev eth0 
   172.18.0.0/16 dev eth1 proto kernel scope link src 172.18.0.2 
   192.168.2.0/24 dev eth0 proto kernel scope link src 192.168.2.128 

*** [ DIAGNOSING ]: Networking
[i] Default IPv4 gateway(s):
     192.168.2.1%eth0
   * Pinging first gateway 192.168.2.1...
[✗] Gateway did not respond. (https://discourse.pi-hole.net/t/why-is-a-default-gateway-important-for-pi-hole/3546)

[i] Default IPv6 gateway(s):
     Unable to determine gateway address for IPv6

*** [ DIAGNOSING ]: Name resolution (IPv4) using a random blocked domain and a known ad-serving domain
[✓] hard-vs-softgolfballs.net is NOERROR on lo (127.0.0.1)
[✓] hard-vs-softgolfballs.net is NOERROR on eth1 (172.18.0.2)
[✓] hard-vs-softgolfballs.net is NOERROR on eth0 (192.168.2.128)
[✗] Failed to resolve doubleclick.com via a remote, public DNS server (8.8.8.8)

*** [ DIAGNOSING ]: Name resolution (IPv6) using a random blocked domain and a known ad-serving domain
[✓] st.admin.iad.eclick.vn is NOERROR on lo (::1)
[✓] No IPv6 address available on eth1
[✓] No IPv6 address available on eth0
[✗] Failed to resolve doubleclick.com via a remote, public DNS server (2001:4860:4860::8888)

*** [ DIAGNOSING ]: Discovering active DHCP servers (takes 6 seconds)
   Scanning all your interfaces for DHCP servers and IPv6 routers
   Timeout: 6 seconds
   
   Error while sending Router Solicitation on eth1: Network unreachable
   Error while sending Router Solicitation on eth0: Network unreachable
   * Received 331 bytes from 192.168.2.254 @ eth0
     Offered IP address: 192.168.2.20
     Server IP address: 192.168.2.254
     Relay-agent IP address: N/A
     BOOTP server: mijnmodem
     BOOTP file: (empty)
     DHCP options:
      Message type: DHCPOFFER (2)
      server-identifier: 192.168.2.254
      lease-time: 14400 ( 4h )
      renewal-time: 7200 ( 2h )
      rebinding-time: 12600 ( 3h 30m )
      netmask: 255.255.255.0
      domain-name: "home"
      dns-server: 192.168.2.128
      router: 192.168.2.254
         --- end of options ---
   
   Received 1 DHCP (IPv4) and 0 RA (IPv6) answers on eth0
   No answer on eth1
 

Ik kan pihole dus wel benaderen maar hij laat geen verkeer door.

Wie o wie kan mij verder helpen of is dit überhaupt niet mogelijk op een KPN box 14?