internet access issue

[tagocha]

hello
I have rasp i 4 with Raspbian Buster with desktop
I have an internet issue in wlan0 and eth0
the internet comes back after using the below codes after every reboot

Code: Select all

sudo dhclient  -r wlan0
sudo dhclient   wlan0

for wlan or

Code: Select all

sudo dhclient  -r wlan0
sudo dhclient   wlan0

I need solve this issue and use the device for in ssh
the attachment image show some informations

[epoch1970]

If you look at the picture you posted, you can see the interface wlan0 has 2 addresses on the network:
- the one it got from dhcpcd automatically
- the one you requested via dhclient, which is another, slightly outmoded, DHCP client.

On the second address, option "noprefixroute" means that adding the address does not prompt the system to configure routing at the same time.
If adding the second address "fixes" the issue, my understanding is that the computer gets an address and configures its network properly in the first place.

The ethernet link is down. Make sure the cable is connected, then the eth0 interface will acquire an address, too.