[Solved]Canon ts3380 printer cannot be find from LAN

Installing and Using OpenWrt
7

$ cat /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 globals 'globals'
option packet_steering '1'

config interface 'wan'
option ifname 'eth0'
option _orig_ifname 'eth0'
option _orig_bridge 'false'
option proto 'pppoe'
option username ''
option password ''
option keepalive '0'
option delegate '0'
option ipv6 'auto'

config interface 'lan'
option proto 'static'
option ipaddr '192.168.121.1'
option netmask '255.255.255.0'
option type 'bridge'
option ifname 'mlan0'
option dns '8.8.8.8 8.8.4.4 114.114.114.114'
option ip6assign '64'

config interface 'PPTP'
option proto 'pptp'
option username ''
option password ''
option keepalive '0'
option auto '0'
option delegate '0'
option server '66...*'

config interface 'docker'
option ifname 'docker0'
option proto 'none'
option auto '0'

config device
option type 'bridge'
option name 'docker0'