DAWN with umdns problem

Model YouHua WR1200JS
Architecture MediaTek MT7621 ver:1 eco:3
Target Platform ramips/mt7621
Firmware Version OpenWrt 24.10.0 r28427-6df0e3d02a / LuCI openwrt-24.10 branch 25.070.50728~f9f4379

It shows no ipaddress in umdns:

        "_dawn._tcp": {
                "OpenWrt251": {
                        "iface": "br-lan",
                        "host": "OpenWrt251.local",
                        "domain": "local",
                        "port": 1026,
                        "ttl": 4500,
                        "last_update": "2025-03-14T12:25:58Z",
                        "priority": 2639,
                        "weight": 28773
                },
                "OpenWrt252": {
                        "iface": "br-lan",
                        "host": "OpenWrt252.local",
                        "domain": "local",
                        "port": 1026,
                        "ttl": 4500,
                        "last_update": "2025-03-14T12:25:57Z",
                        "priority": 2639,
                        "weight": 28773
                },
                "OpenWrt250": {
                        "iface": "br-lan",
                        "host": "OpenWrt250.local",
                        "domain": "local",
                        "port": 1026,
                        "ttl": 4500,
                        "last_update": "2025-03-14T12:25:58Z",
                        "priority": 2639,
                        "weight": 28773
                }
        },

Updated: it's a known issue https://openwrt.org/docs/guide-developer/mdns