23/12/2025

fixed ip configuration

network management software identification

root@miles:~# nmcli -t -f NAME,TYPE connection show
SPARK-88AAHV_EXT:802-11-wireless
lo:loopback

current mask

ip route
default via 192.168.1.254 dev wlp2s0 proto dhcp src 192.168.1.101 metric 600   # mask
169.254.0.0/16 dev wlp2s0 scope link metric 1000 
192.168.1.0/24 dev wlp2s0 proto kernel scope link src 192.168.1.101 metric 600 

current ipv4 addr

ip -4 addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
3: wlp2s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    inet 192.168.1.101/24 brd 192.168.1.255 scope global dynamic noprefixroute wlp2s0
       valid_lft 4251sec preferred_lft 4251sec

remote ssh key setting

ssh-keygen -t ed25519 -a 100 -C "your_email_or_note"

ssh-copy-id -i ~/.ssh/id_ed25519.pub user@server_ip

cursor_debian_static_ip_configuration.md