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I've read many posts that talk about similar problems but anything has worked for me. When I try to enter github.com it says:

No se puede conectar

Firefox no puede establecer una conexión con el servidor en github.com.

I've tried with other browsers and happens the same. (now I'm using Firefox Quantum). I've done host with github:

$ host www.github.com

www.github.com is an alias for github.com.
github.com has address 192.30.253.113
github.com has address 192.30.253.112
github.com mail is handled by 5 alt2.aspmx.l.google.com.
github.com mail is handled by 1 aspmx.l.google.com.
github.com mail is handled by 10 alt3.aspmx.l.google.com.
github.com mail is handled by 10 alt4.aspmx.l.google.com.
github.com mail is handled by 5 alt1.aspmx.l.google.com.

and:

ping -c 3 www.github.com

PING github.com (192.30.253.113) 56(84) bytes of data.
From 192.168.254.100 icmp_seq=1 Destination Host Unreachable

and: traceroute www.github.com

traceroute to www.github.com (192.30.253.113), 30 hops max, 60 byte packets
 1  192.168.254.100 (192.168.254.100)  3061.719 ms !H  3061.680 ms !H  3061.672 ms !H

but with google everything is fine:

$ traceroute www.google.es
traceroute to www.google.es (216.58.210.163), 30 hops max, 60 byte packets
 1  192.168.0.1 (192.168.0.1)  0.649 ms  1.042 ms  1.770 ms
 2  static-10-0-235-87.ipcom.comunitel.net (87.235.0.10)  20.051 ms  22.691 ms  24.117 ms
 3  172.29.144.110 (172.29.144.110)  25.077 ms 172.29.144.106 (172.29.144.106)  27.848 ms 172.29.144.110 (172.29.144.110)  28.457 ms

Thank you

ip route show:

default via 192.168.0.1 dev enp3s0f1  proto static  metric 100 
default via 192.168.0.1 dev wlp2s0  proto static  metric 600 
169.254.0.0/16 dev enp3s0f1  proto static  scope link  metric 1000 
172.17.0.0/16 dev docker0  proto kernel  scope link  src 172.17.0.1 linkdown 
192.0.0.0/8 dev vboxnet0  proto kernel  scope link  src 192.168.254.100 linkdown 
192.168.0.0/24 dev enp3s0f1  proto kernel  scope link  src 192.168.0.161  metric 100 
192.168.0.0/24 dev wlp2s0  proto kernel  scope link  src 192.168.0.156  metric 600
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  • And what is the issue here? Nov 18, 2017 at 12:25
  • That I can't connect to github or other pages like this
    – e5pe
    Nov 18, 2017 at 12:27
  • What is your interface's netmask? please edit your question to include the output of ip route show Nov 18, 2017 at 12:29
  • 1
    Your issue is likely related to the routing table entry 192.0.0.0/8 dev vboxnet0 - did you add that manually? what are you trying to achieve? Nov 18, 2017 at 12:47
  • It is from VirtualBox and I just created it inside VirtualBox but not manually.
    – e5pe
    Nov 18, 2017 at 12:50

1 Answer 1

0

Okey, I think I found the solution to my problem. After steeldriver said this, I thought why not update the virtualbox, because it seemed to be something related to it. And I did it and everything works fine!

The version of the VirtualBox I am using now is 5.2.0.

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