The update on a ER-X wen’t perfectly fine with owut.
I still observe those multicast messages which started appearing after updating from 23.* to 24 (see here as well Repeated logs for entered/left allmulticast mode - #16 by gone )
Sat Dec 20 16:35:01 2025 kern.info kernel: [ 636.189939] br-lan.1: left allmulticast mode
Sat Dec 20 16:35:01 2025 kern.info kernel: [ 636.198767] br-lan: left allmulticast mode
Sat Dec 20 16:35:01 2025 kern.info kernel: [ 636.301733] br-lan.1: entered allmulticast mode
Sat Dec 20 16:35:01 2025 kern.info kernel: [ 636.310831] br-lan: entered allmulticast mode
Sat Dec 20 16:35:01 2025 kern.info kernel: [ 636.320711] mtk_soc_eth 1e100000.ethernet eth0: left allmulticast mode
Sat Dec 20 16:35:01 2025 kern.info kernel: [ 636.461493] mtk_soc_eth 1e100000.ethernet eth0: entered allmulticast mode
Maybe those disappear with 25 again.