Fixes for Linux Kernel 6.16

[Natrinicle]

Builds on 6.16.3 using both 239.patch and
ipt_netflow.2.6_kernel_6.4.patch from
https://aur.archlinux.org/packages/ipt_netflow
as well as two fixes for del_timer_sync() being renamed to timer_delete_sync() as detailed in
https://www.mail-archive.com/debian-bugs-dist@lists.debian.org/msg2039396.html

[k0ste]

Added to Arch 🤳🏿

[DocMAX]

[Sat Oct 25 18:07:36 2025] ipt_NETFLOW is not loaded.
[Sat Oct 25 18:07:37 2025] ipt_NETFLOW version 2.6, srcversion (null)
[Sat Oct 25 18:07:37 2025] ipt_NETFLOW: hashsize 61275 (239K)
[Sat Oct 25 18:07:37 2025] netflow: registering: /proc/net/stat/ipt_netflow
[Sat Oct 25 18:07:37 2025] netflow: registered: /proc/net/stat/ipt_netflow
[Sat Oct 25 18:07:37 2025] netflow: registering: /proc/net/stat/ipt_netflow_snmp
[Sat Oct 25 18:07:37 2025] netflow: registered: /proc/net/stat/ipt_netflow_snmp
[Sat Oct 25 18:07:37 2025] netflow: registering: /proc/net/stat/ipt_netflow_flows
[Sat Oct 25 18:07:37 2025] netflow: registered: /proc/net/stat/ipt_netflow_flows
[Sat Oct 25 18:07:37 2025] sysctl table check failed: net/netflow/(null) procname is null
[Sat Oct 25 18:07:37 2025] sysctl table check failed: net/netflow/(null) No proc_handler
[Sat Oct 25 18:07:37 2025] netflow: can't register to sysctl