I cannot access to GitHub only on my Ubuntu 18.04 machine and all other machines (Windows PC, iPad, Phone) connected to the same network can access GitHub.
When I try to ping GitHub, I get
The result of run nslookup github.com
:
Server: 127.0.0.53
Address: 127.0.0.53#53
Non-authoritative answer:
Name: github.com
Address: 192.30.253.112
If I try sudo route -n
:
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 192.168.178.1 0.0.0.0 UG 600 0 0 wlp4s0
169.254.0.0 0.0.0.0 255.255.0.0 U 1000 0 0 wlp4s0
192.168.178.0 0.0.0.0 255.255.255.0 U 600 0 0 wlp4s0
If I ping google.com
, it works.
I can't access GitHub in the browser also. However, all other websites work fine. Also, I can access GitHub on other devices. Is there anything wrong with the DNS?