From what I can tell, your Internet connection, could be down or the modem/router may be getting Internet but is unable to relay it to your computer. It is a good idea to power cycle your modem and router and verify connectivity through a wired connection to the computer or a laptop. When the modem comes back on after about 30 seconds, note the status of the Power light, Internet lights (DSL/Cable and Internet), and Wifi light. These lights should be on. Should the DSL or Cable light be off upon power cycling the modem/router, you may have to call your ISP to test your line or test your modem/router.
Since you mentioned you were getting a DNS error, it would not hurt to run a malware scan or a full virus scan on the computer you got the error on. Malware and viruses may be detected and eliminated from the scanned device, and potentially eliminate the DNS error, restoring your Internet access.
Nader
Hi !
I need your help plz
I can't access my internet and I think someone use some software to provent me accessing my internet because I get a DNS ERREUR and my hostname become in-addr-arpa.xx.xx.xx.xx
Plz help me

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