Add network to the DHCP section and specify a network segment as the DHCP address pool

[peterwillcn]

The problem is to distinguish between two subnets under the same interface and specify subnetworks as the default address pool

option network '172.16.1.0/24' # It seems to have no effect

dhcp

config dhcp 'lan'
        option interface 'lan'
        option start '100'
        option limit '150'
        **option network '172.16.1.0/24'  # It seems to have no effect**
        option leasetime '12h'
        option dhcpv4 'server'
        option dhcpv6 'server'
        option ra 'server'
        option ra_slaac '1'
        list ra_flags 'managed-config'
        list ra_flags 'other-config'

network

config interface 'lan'
    option ifname 'eth1'
    option proto 'static'
    list ipaddr '172.16.1.1/24'  
    list ipaddr '192.168.2.1/24'  

[Alphix]

Perhaps prefix_filter could be extended to:
a) take an array instead of a string
b) accept both IPv4 and IPv6 addresses in CIDR notation

Changing start and limit would be other options, but that risks causing complications with dnsmasq compatibility...