vuurmuur fail to start on Debian 12

[carlosmaug]

After upgrading to Debian 12 vuurmuur stop working.

uname -a Linux 6.1.0-9-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.27-1 (2023-05-08) x86_64 GNU/Linux

/etc/init.d/vuurmuur start
Starting firewall: Vuurmuur:
        Loading modules:        ip_tables iptable_filter iptable_mangle iptable_nat modprobe: FATAL: Module nf_conntrack_ipv4 not found in directory /lib/modules/6.1.0-9-amd64
nf_conntrack_ipv4 nf_conntrack_ftp nf_nat nf_nat_ftp 
        Loading Vuurmuur:       Error: checking for iptables-capabilities failed. Please see error.log.
FAILED, please check /var/log/vuurmuur/error.log.
        Loading Vuurmuur_log:   ok.
Starting firewall: Vuurmuur: done

cat /var/log/vuurmuur/error.log
06/26/2023 11:29:27 : PID 13615 : vuurmuur      : Error (-1): no iptables-support in the kernel: filter table missing (in: iptcap.c:624:vrmr_check_iptcaps)

cat /var/log/vuurmuur/debug.log
06/26/2023 11:31:33 : PID 14175 : vuurmuur      : [iptcap.c:287:iptcap_test_filter_rpfilter_match]: iptcap_delete_test_filter_chain failed, but error will be ignored
06/26/2023 11:31:33 : PID 14188 : vuurmuur_log  : [vuurmuur_log.c:306:main]: Setting up nflog
06/26/2023 11:31:33 : PID 14189 : vuurmuur_log  : [vuurmuur_ipc.c:66:ipc_setup]: Creating shared memory successfull: shm_id: 20.

cat /var/log/vuurmuur/vuurmuur.log
06/26/2023 11:34:11 : PID 14385 : vuurmuur      : Error (-1): no iptables-support in the kernel: filter table missing (in: iptcap.c:624:vrmr_check_iptcaps)
06/26/2023 11:34:11 : PID 14398 : vuurmuur_log  : Info: subscribed to nflog group 8
06/26/2023 11:34:11 : PID 14398 : vuurmuur_log  : Warning: can't set mnl socket timeout: Protocol not available (in: conntrack.c:274:conntrack_subscribe)
06/26/2023 11:34:11 : PID 14398 : vuurmuur_log  : Info: Loading services...
06/26/2023 11:34:11 : PID 14398 : vuurmuur_log  : Info: Loading services succesfull.
06/26/2023 11:34:11 : PID 14398 : vuurmuur_log  : Info: Loading interfaces...
06/26/2023 11:34:11 : PID 14398 : vuurmuur_log  : Info: Loading interfaces succesfull.
06/26/2023 11:34:11 : PID 14398 : vuurmuur_log  : Info: Loading zones...
06/26/2023 11:34:11 : PID 14398 : vuurmuur_log  : Info: Loading zones succesfull.
06/26/2023 11:34:11 : PID 14398 : vuurmuur_log  : Info: Creating hash-table for the zones...
06/26/2023 11:34:11 : PID 14398 : vuurmuur_log  : Info: Creating hash-table for the services...
06/26/2023 11:34:11 : PID 14399 : vuurmuur_log  : Info: Attaching to shared memory successfull.
06/26/2023 11:34:11 : PID 14399 : vuurmuur_log  : Info: Creating a semaphore success: 21
06/26/2023 11:34:11 : PID 14399 : vuurmuur_log  : Info: Initializing the semaphore successfull.

iptables-save 
# Generated by iptables-save v1.8.9 (nf_tables) on Mon Jun 26 12:03:01 2023
*mangle
:PREROUTING ACCEPT [0:0]
:INPUT ACCEPT [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
:POSTROUTING ACCEPT [0:0]
:PRE-VRMR-FORWARD - [0:0]
-A PRE-VRMR-FORWARD -o ppp0 -p tcp -m tcp --tcp-flags SYN,RST SYN -m tcpmss --mss 1400:65495 -j TCPMSS --clamp-mss-to-pmtu
COMMIT
# Completed on Mon Jun 26 12:03:01 2023
# Generated by iptables-save v1.8.9 (nf_tables) on Mon Jun 26 12:03:01 2023
*raw
:PREROUTING ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
COMMIT
# Completed on Mon Jun 26 12:03:01 2023
# Generated by iptables-save v1.8.9 (nf_tables) on Mon Jun 26 12:03:01 2023
*filter
:INPUT ACCEPT [227:18726]
:FORWARD ACCEPT [286:37207]
:OUTPUT ACCEPT [91:8163]
:f2b-postfix-sasl - [0:0]
COMMIT
# Completed on Mon Jun 26 12:03:01 2023
# Generated by iptables-save v1.8.9 (nf_tables) on Mon Jun 26 12:03:01 2023
*nat
:PREROUTING ACCEPT [0:0]
:INPUT ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
:POSTROUTING ACCEPT [0:0]
COMMIT
# Completed on Mon Jun 26 12:03:01 2023
# Warning: iptables-legacy tables present, use iptables-legacy-save to see them

┌─────────────────────────────── Status ───────────────────────────────┐
│ One or more problems were detected in your current setup. Below is   │
│ a list.                                                              │
│                                                                      │
│ - No interfaces have shaping enabled. Please make sure that at       │
│ least one of the interfaces has shaping enabled (warn).              │
│                                                                      │
│ - No connection could be established with Vuurmuur. Please make      │
│ sure that it is running (fail).