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I have configured a Wifi connection on my Ubuntu Server powered machine, following this answer.

I also configured ssh so I can connect from other machines to this machine when it's running. Everything works fine, but, every time I start the machine, first I have to login, and do:

ifdown ...
ifup ...

The internet connection does work before running these two commands, but accepting SSH connections doesn't work.

After restarting the Wifi connection, I can ssh from my other machines.

How to solve this problem? Why does this appear at all?

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Ionică Bizău
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  • what relevant logs are in the /var/log? – Jakuje Dec 26 '16 at 11:32
  • @Jakuje Um, there are a lot of files there. Is there anything specific we would be interested in? – Ionică Bizău Dec 26 '16 at 11:34
  • Maybe sshd is starting before the WiFi connection is established, and thus only listens on wired connection (if any). – ridgy Dec 26 '16 at 11:37
  • @ridgy You may be right. I remember this used to work when it was using a wired connection. Now I'm using a wifi dongle. – Ionică Bizău Dec 26 '16 at 11:39
  • You should see the status of ssh when running systemctl status sshd. The logs related to sshd should be in /var/log/syslog and /var/log/auth.log. – Jakuje Dec 26 '16 at 11:43
  • Does your wifi automatically connect to any access points? I'm wondering if it connects to a network and then gets routes from a dhcp server and then suddenly has problems connecting because of that. What is the topology of your network? – Kyle H Dec 26 '16 at 12:38
  • @KyleH It just connects to the router, getting a static ip on the network (192.168.2.150). – Ionică Bizău Dec 26 '16 at 13:44

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