今天嘗試在hyper-v設定ubuntu固定IP,不想IP是可以浮動,導致SSH的麻煩
作了以下操作

sudo   vi /etc/netplan/50-cloud-init.yaml
network:
    ethernets:
        eth0:
            addresses: [192.168.137.200/24]
sudo  netplan apply

之後ifconfig 數據如下

使用SSH連接出現錯誤

Connecting to 192.168.137.200:22...
Could not connect to '192.168.137.200' (port 22): Connection failed.

請問我哪邊做錯了嗎?

更新

嘗試1 : 將50-cloud-init.yaml檔案清空保存
結果 : 可以正確連線,但又變回浮動IP...

Connecting to 172.25.60.31:22...
Connection established.
To escape to local shell, press 'Ctrl+Alt+]'.

Welcome to Ubuntu 20.04.1 LTS (GNU/Linux 5.4.0-47-generic x86_64)

 * Documentation:  https://help.ubuntu.com
 * Management:     https://landscape.canonical.com
 * Support:        https://ubuntu.com/advantage

  System information as of Mon 14 Sep 2020 03:00:05 AM UTC

  System load:  0.0               Processes:                126
  Usage of /:   8.1% of 61.76GB   Users logged in:          1
  Memory usage: 17%               IPv4 address for docker0: 172.17.0.1
  Swap usage:   0%                IPv4 address for eth0:    172.25.60.31


30 updates can be installed immediately.
0 of these updates are security updates.
To see these additional updates run: apt list --upgradable


Last login: Mon Sep 14 02:11:39 2020 from 172.25.48.1
test@test:~$ 

嘗試 : 按照 wrxue 大神做法

看你使用浮動IP的結果，你的介面卡eth0網段應該是172.25.48.0/20，你設定一個192.168.137.200/24當然不會通

network:
        ethernets:
                eth0:
                        addresses: [172.25.60.31/24]

結果 : 可以正常SSH連線!

Connecting to 172.25.60.31:22...
Connection established.