電腦有2個ip 但dns只有一筆記錄

 網域電腦透過dhcp，留到有線與無線網路的IP，但在DNS上，都只有出現一筆，而且是出現比較晚抓到IP的那一筆。

查了一下才發現是DHCP的設定中，DNS動態更新選項，預設是選"只有在DHCP用戶端要求時才動更新dns記錄"，這個就會讓你兩個IP都在DNS上註冊。

但如果選"一律動態更新DNS記錄"，就只會出現最新的那一筆IP記錄。

A domain-joined computer obtains both wired and wireless IP addresses through DHCP, but only one record appears in DNS, and it is always the one obtained later.

After checking, I found that this is caused by the DHCP setting for dynamic DNS updates. By default, it is set to “Dynamically update DNS records only if requested by the DHCP client,” which results in both IP addresses being registered in DNS.

However, if you change it to “Always dynamically update DNS records,” only the most recent IP address will appear in DNS.