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mDNS：mDNS avahi on debian 12

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Created: 2024年3月17日星期日 15:48:12 Latest updated:2025年5月2日星期五 18:12:45 views(965)

avahi-daemon 是一种Linux操作系统上运行在客户机上实施查找基于网络的Zeroconf service的服务守护进程。 该服务可以为Zeroconf网络实现DNS服务发现及DNS组播规范。 用户程序通过Linux D-Bus信息传递接收发现到网络服务和资源的通知。 该守护进程配合缓存用户程序的答复，以帮助减少因答复而产生的网络流量。

 

通过安装 avahi 和 avahi-tools 工具，也可以发现服务，安装命令如下

sudo apt-get install avahi-daemon
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安装 avahi-tools 之后，才能使用 avahi-browse 命令。

可以查看局域网内所有的mdns服务，命令如下：

 

http://localhost:4999/boards/topic/21933

#Check the status
sudo systemctl status avahi-daemon

#Check Avahi Logs
journalctl -u avahi-daemon -f
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sudo apt install  avahi-utils
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查看局域网内所有的mdns服务

avahi-browse -a
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output

eth0 IPv4 Aqara-Hub-M1S-EDB6                            _hap._tcp            local
+   eth0 IPv6 758E48518BB628C0-000000000001B669             _matter._tcp         local
+   eth0 IPv4 Aqara-Hub-M1S-EDB6                            _aqara-setup._tcp    local
+   eth0 IPv4 Aqara-Hub-M1S-EDB6                            _aqara._tcp          local
+   eth0 IPv6 Aqara-Hub-M1S-EDB6                            _aqara-setup._tcp    local
+   eth0 IPv6 Aqara-Hub-M1S-EDB6                            _aqara._tcp          local
+   eth0 IPv6 70-35-60-63.1 ______                          _sleep-proxy._udp    local
+   eth0 IPv4 70-35-60-63.1 ______                          _sleep-proxy._udp    local
+   eth0 IPv6 ______                                        _companion-link._tcp local
+   eth0 IPv4 ______                                        _companion-link._tcp local
+   eth0 IPv6 ______                                        AirPlay Remote Video local
+   eth0 IPv4 ______                                        AirPlay Remote Video local
+   eth0 IPv6 8A730F4C1F14@______                           AirTunes Remote Audio local
+   eth0 IPv4 8A730F4C1F14@______                           AirTunes Remote Audio local
+   eth0 IPv6 ______                                        _meshcop._udp        local
+   eth0 IPv4 ______                                        _meshcop._udp        local
+   eth0 IPv4 ______                                        _srpl-tls._tcp       local
+   eth0 IPv6 ______                                        _srpl-tls._tcp       local
+   eth0 IPv6 Home                                          _home-assistant._tcp local
+   eth0 IPv4 Home                                          _home-assistant._tcp local
+   eth0 IPv4 esp32no2                                      _custom_service._tcp local
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How to use mDNS to access a device without knowing the IP address

This wiki explains how to access a board connected to a LAN without explicitly knowing its IP adress. There are several techniques to do this:

Assigning a fixed IP address to your device from the DHCP server in your switch.
Having a local name server in your network.
Having your device send mDNS messages.
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This wiki focuses on 3. since it's the simplest of the three. Specifically, this wiki shows how to enable mDNS in Linux devices using Avahi.

https://developer.ridgerun.com/wiki/index.php/How_to_use_mDNS_to_access_a_device_without_knowing_the_IP_address