iptables lanspoof dhcp

[dreclauw]

On my lan with static ip i use this iptables rule for anti lanspoof:
iptables -A INPUT -i wlan0 -s 192.168.1.0/24 -j LANSPOOF

When connected to a hotspot with dhcp, and want to set the same anti lanspoof, my local ip changes for example: 162.19.63.81 to 162.19.27.82
the first two numbers stay the same 162.19 then the last two numbers change.
iptables -A INPUT -i wlan0 -s 162.19.(because this number changes, what do i put here?).0/24 -j LANSPOOF

i did try to set for 0.0.0.0/24 and 0.0.0.0 but then the anti spoof did not work.
so what ip do have to use: 162.19.?.0/24

[p.H]

On my lan with static ip i use this iptables rule for anti lanspoof:
iptables -A INPUT -i wlan0 -s 192.168.1.0/24 -j LANSPOOF

What is the purpose of this "anti lanspoof" rule ?
What is the contents of the LANSPOOF chain ?

When connected to a hotspot with dhcp, and want to set the same anti lanspoof, my local ip changes for example: 162.19.63.81 to 162.19.27.82

162.19.63.81 is bigger then 162.19.27.82.

[dreclauw]

On my lan with static ip i use this iptables rule for anti lanspoof:
iptables -A INPUT -i wlan0 -s 192.168.1.0/24 -j LANSPOOF

What is the purpose of this "anti lanspoof" rule ?
What is the contents of the LANSPOOF chain ?

When connected to a hotspot with dhcp, and want to set the same anti lanspoof, my local ip changes for example: 162.19.63.81 to 162.19.27.82

162.19.63.81 is bigger then 162.19.27.82.

Hello p.H,

The purpose of the lanspoof rule is to drop all connections on the set ip range.
The contents of the LANSPOOF chain is set to: DROP

the ip i posted was just a made up ip, what i try to point out is that the last two 162.19.X.X change, where before on my lan only the last 192.168.1.X changes.

[p.H]

The purpose of the lanspoof rule is to drop all connections on the set ip range.

How is this related with spoof ?

last two 162.19.X.X change, where before on my lan only the last 192.168.1.X changes.

Change the prefix length from /24 to /16.