Problems establishing connection with Raspberry Pi with ROS2 over WiFi. Talker-Listener not working.

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Same issue here. (ubuntu 22.04) ROS2 humble multicast only via ethernet. While using WIFI it doesn't work even though there is a ping between the machines.

Hi there, I'm having the same issue with Humble. The multicast test (send/receive) and the demo talker/listener works when the cable is plugged in. As soon as I go via wifi there's not connection anymore. I can ping the PI, but the multicast test as well as demo talker/listener doesn't work anymore.

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
   link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
   inet 127.0.0.1/8 scope host lo
   valid_lft forever preferred_lft forever
   inet6 ::1/128 scope host
   valid_lft forever preferred_lft forever
 2: eth0: <BROADCAST,MULTICAST> mtu 1500 qdisc fq_codel state DOWN group default qlen 1000
   link/ether b8:27:eb:65:49:71 brd ff:ff:ff:ff:ff:ff
 3: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
   link/ether b8:27:eb:30:1c:24 brd ff:ff:ff:ff:ff:ff
   inet 192.168.178.92/24 metric 600 brd 192.168.178.255 scope global dynamic wlan0
   valid_lft 808235sec preferred_lft 808235sec
   inet6 2003:ec:7f28:1800:ba27:ebff:fe30:1c24/64 scope global dynamic mngtmpaddr noprefixroute
   valid_lft 6750sec preferred_lft 1106sec
   inet6 fe80::ba27:ebff:fe30:1c24/64 scope link
   valid_lft forever preferred_lft forever

I'm stuck here, too. Thanks for any advice.