Hello,
I'm trying to confgure OpenWRT to have different subnet for LAN and WAN - the communication between the two subnets shouldn't be restricted. Following configuration almost work, but I cannot connect to some devices on LAN when I'm connected via WLAN. I cannot figure why 
P.S. When both WiFi networks are assigned to LAN interface everything works as it should.
/etc/config/network
config interface 'loopback'
option ifname 'lo'
option proto 'static'
option ipaddr '127.0.0.1'
option netmask '255.0.0.0'
config interface 'lan'
option type 'bridge'
option ifname 'eth1'
option proto 'static'
option netmask '255.255.255.0'
option ip6assign '60'
option ipaddr '192.168.1.1'
config interface 'wan'
option proto 'pppoe'
option ifname 'eth0'
option password '*'
option ipv6 '1'
option keepalive '5 5'
option username '*'
option peerdns '0'
option dns '*'
config switch
option name 'switch0'
option reset '1'
option enable_vlan '1'
config switch_vlan
option device 'switch0'
option vlan '1'
option ports '2 3 4 5 0'
config switch_vlan
option device 'switch0'
option vlan '2'
option ports '1 6'
config interface 'ADSL'
option proto 'static'
option ifname 'eth0'
option ipaddr '10.0.0.137'
option netmask '255.255.255.0'
config interface 'wifi'
option proto 'static'
option ipaddr '192.168.2.1'
option netmask '255.255.255.0'
option type 'bridge'
option _orig_ifname 'wlan0 wlan1'
option _orig_bridge 'true'
/etc/config/wireless
config wifi-device 'radio0'
option type 'mac80211'
option hwmode '11a'
option path 'pci0000:01/0000:01:00.0'
option country 'PL'
option channel 'auto'
option htmode 'VHT80'
option txpower '17'
option distance '15'
config wifi-iface 'default_radio0'
option device 'radio0'
option mode 'ap'
option key '*'
option encryption 'psk2'
option macfilter 'allow'
list maclist '*'
option ssid '*'
option network 'wifi'
config wifi-device 'radio1'
option type 'mac80211'
option hwmode '11g'
option path 'platform/qca955x_wmac'
option htmode 'HT40'
option country 'PL'
option channel '3'
option txpower '17'
option distance '15'
config wifi-iface 'default_radio1'
option device 'radio1'
option mode 'ap'
option encryption 'psk2'
option key '*'
option macfilter 'allow'
list maclist '*'
option ssid '*'
option network 'wifi'
/etc/config/firewall
config defaults
option syn_flood '1'
option input 'ACCEPT'
option output 'ACCEPT'
option forward 'REJECT'
option drop_invalid '1'
config zone
option name 'lan'
option input 'ACCEPT'
option output 'ACCEPT'
option forward 'ACCEPT'
option network 'lan'
config zone
option name 'wan'
option input 'REJECT'
option output 'ACCEPT'
option forward 'REJECT'
option masq '1'
option mtu_fix '1'
option network 'wan wan6'
config zone
option name 'wifi'
option input 'ACCEPT'
option output 'ACCEPT'
option forward 'ACCEPT'
option network 'wifi'
config forwarding
option src 'lan'
option dest 'wan'
config forwarding
option src 'wifi'
option dest 'wan'
config forwarding
option src 'lan'
option dest 'wifi'
config forwarding
option src 'wifi'
option dest 'lan'
config rule
option name 'Allow-DHCP-Renew'
option src 'wan'
option proto 'udp'
option dest_port '68'
option target 'ACCEPT'
option family 'ipv4'
config rule
option name 'Allow-Ping'
option src 'wan'
option proto 'icmp'
option icmp_type 'echo-request'
option family 'ipv4'
option target 'ACCEPT'
config rule
option name 'Allow-IGMP'
option src 'wan'
option proto 'igmp'
option family 'ipv4'
option target 'ACCEPT'
config rule
option name 'Allow-DHCPv6'
option src 'wan'
option proto 'udp'
option src_ip 'fc00::/6'
option dest_ip 'fc00::/6'
option dest_port '546'
option family 'ipv6'
option target 'ACCEPT'
config rule
option name 'Allow-MLD'
option src 'wan'
option proto 'icmp'
option src_ip 'fe80::/10'
list icmp_type '130/0'
list icmp_type '131/0'
list icmp_type '132/0'
list icmp_type '143/0'
option family 'ipv6'
option target 'ACCEPT'
config rule
option name 'Allow-ICMPv6-Input'
option src 'wan'
option proto 'icmp'
list icmp_type 'echo-request'
list icmp_type 'echo-reply'
list icmp_type 'destination-unreachable'
list icmp_type 'packet-too-big'
list icmp_type 'time-exceeded'
list icmp_type 'bad-header'
list icmp_type 'unknown-header-type'
list icmp_type 'router-solicitation'
list icmp_type 'neighbour-solicitation'
list icmp_type 'router-advertisement'
list icmp_type 'neighbour-advertisement'
option limit '1000/sec'
option family 'ipv6'
option target 'ACCEPT'
config rule
option name 'Allow-ICMPv6-Forward'
option src 'wan'
option dest '*'
option proto 'icmp'
list icmp_type 'echo-request'
list icmp_type 'echo-reply'
list icmp_type 'destination-unreachable'
list icmp_type 'packet-too-big'
list icmp_type 'time-exceeded'
list icmp_type 'bad-header'
list icmp_type 'unknown-header-type'
option limit '1000/sec'
option family 'ipv6'
option target 'ACCEPT'
config include
option path '/etc/firewall.user'
config rule
option src 'wan'
option dest 'lan'
option proto 'esp'
option target 'ACCEPT'
config rule
option src 'wan'
option dest 'lan'
option dest_port '500'
option proto 'udp'
option target 'ACCEPT'
/etc/config/dhcp
config dnsmasq
option domainneeded '1'
option boguspriv '1'
option localise_queries '1'
option rebind_protection '1'
option rebind_localhost '1'
option local '/lan/'
option domain 'lan'
option expandhosts '1'
option authoritative '1'
option readethers '1'
option leasefile '/tmp/dhcp.leases'
option resolvfile '/tmp/resolv.conf.auto'
option localservice '1'
option filterwin2k '1'
option nonwildcard '0'
config dhcp 'lan'
option interface 'lan'
option start '100'
option limit '150'
option leasetime '48h'
option dhcpv6 'server'
option ra 'server'
option ra_management '1'
option force '1'
config dhcp 'wifi'
option start '100'
option limit '150'
option dhcpv6 'server'
option ra 'server'
option ra_management '1'
option force '1'
option interface 'wifi'
option leasetime '48h'
config dhcp 'wan'
option interface 'wan'
option ignore '1'
config odhcpd 'odhcpd'
option maindhcp '0'
option leasefile '/tmp/hosts/odhcpd'
option leasetrigger '/usr/sbin/odhcpd-update'
