Hi to all!
I recently got my first OpenWrt router (GL-MT6000), so I'm quite new to this topic. My goal is to use the Youtube App on a phone to cast on a TV. Phone and TV are in different subnets.
For this, on my router, I configured two bridge devices, each one assigned to an interface using different subnets (I do not use VLANs):
Interface: lan (bridge device: br-lan): 10.0.0.254/24
Interface: media (bridge device: br-media): 10.0.20.254/24
I set up the corresponding firewall zones so that lan can access both wan and media, while media can only access wan:
lan -> wan, media: allow, allow, allow
media -> wan: drop, allow, drop
My phones are in the lan subnet, while my TV is in the media subnet. As initially stated, I would like to cast videos from my phone using the YouTube app to the TV. The problem is that mDNS queries from lan to media don't go through, nor do the responses return to lan. As a result, the YouTube app cannot find the TV.
I have already tried installing the avahi-daemon and configuring it as an mDNS reflector so that, in theory, queries should reach both subnets. Additionally, I set up a firewall rule to forward the requests:
Incoming IPv4, protocol UDP
From any zone, port 5353
To this device, port 5353
Accept input
In general, I followed this guide.
Unfortunately, this isn't working at all, and I’m completely stuck. I’ve also tried mdns-repeater and umdns instead of avahi, but still without success. The YouTube app simply refuses to offer the TV for casting.
Would appreciate any advice, help or suggestions on what I could try next. Or have I completely misunderstood something?
Here are my configurations:
/etc/config/network:
config device
option name 'br-lan'
option type 'bridge'
list ports 'lan1'
list ports 'lan2'
option ipv6 '0'
config interface 'lan'
option device 'br-lan'
option proto 'static'
option ipaddr '10.0.0.254'
option netmask '255.255.255.0'
option ip6assign '60'
config device
option type 'bridge'
option name 'br-media'
option bridge_empty '1'
list ports 'lan3'
list ports 'lan4'
config interface 'media'
option proto 'static'
option device 'br-media'
option ipaddr '10.0.20.254'
option netmask '255.255.255.0'
/etc/config/firewall:
config defaults
option input 'REJECT'
option output 'ACCEPT'
option forward 'DROP'
option synflood_protect '1'
option drop_invalid '1'
config zone
option name 'lan'
option input 'ACCEPT'
option output 'ACCEPT'
option forward 'ACCEPT'
list network 'lan'
config zone
option name 'media'
option input 'DROP'
option output 'ACCEPT'
option forward 'DROP'
list network 'media'
config zone
option name 'wan'
option input 'DROP'
option output 'ACCEPT'
option forward 'DROP'
option masq '1'
option mtu_fix '1'
list network 'wan'
list network 'wan6'
config forwarding
option src 'lan'
option dest 'wan'
config rule
option name 'media-DHCP'
list proto 'udp'
option src 'media'
option dest_port '67 68'
option target 'ACCEPT'
option family 'ipv4'
config rule
option name 'media-DNS'
option family 'ipv4'
option src 'media'
option dest_port '53'
option target 'ACCEPT'
config rule
option src_port '5353'
option src '*'
option name 'Allow-mDNS'
option target 'ACCEPT'
option dest_port '5353'
option proto 'udp'
option family 'ipv4'
config forwarding
option src 'lan'
option dest 'media'
/etc/avahi/avahi-daemon.conf:
[server]
use-ipv4=yes
use-ipv6=no
check-response-ttl=no
use-iff-running=no
[publish]
publish-addresses=yes
publish-hinfo=yes
publish-workstation=yes
publish-domain=yes
[reflector]
enable-reflector=yes
reflect-ipv=no
[rlimits]
rlimit-core=0
rlimit-data=4194304
rlimit-fsize=0
rlimit-nofile=30
rlimit-stack=4194304
rlimit-nproc=3
