Does position of allow-DHCP-guest in traffic list matter ? Same question of DNS
I assume you're talking about the firewall traffic rules?
For those specific rules -- when the input zone rule is set to drop or reject -- no. But this is not necessarily always true since it does depend on the overall configuration of your firewall.
Are you experiencing an issue? If so, please describe and also post your config.
Please connect to your OpenWrt device using ssh and copy the output of the following commands and post it here using the "Preformatted text </> " button (red circle; this works best in the 'Markdown' composer view in the blue oval):
Remember to redact passwords, VPN keys, MAC addresses and any public IP addresses you may have:
ubus call system board
cat /etc/config/network
cat /etc/config/wireless
cat /etc/config/dhcp
cat /etc/config/firewall
No problem. Wiki instructions put both at the bottom.