nslookup raw.githubusercontent.com return 0.0.0.0

[nodew]

I could't fetch content from raw.githubusercontent.com, after my investigation, the nslookup returned 0.0.0.0, which is weird.

$ nslookup raw.githubusercontent.com
Server:         192.168.0.1
Address:        192.168.0.1#53

Non-authoritative answer:
Name:   raw.githubusercontent.com
Address: 0.0.0.0
Name:   raw.githubusercontent.com
Address: ::

meanwhile, nslookup github.map.fastly.net works fine.

$ nslookup github.map.fastly.net
Server:         192.168.0.1
Address:        192.168.0.1#53

Non-authoritative answer:
Name:   github.map.fastly.net
Address: 151.101.76.133

[karuboniru]

If you are in mainland China(seems to be true from the Chinese characters in your bio), that is totally normal, blame GFW instead.

And doing nslookup raw.githubusercontent.com in the windows side should return the same ip. This also suggests that the problem is from the network/DNS itself but not WSL.

Use a proxy to solve this.

For sure you can make raw.githubusercontent.com accessible by a hosts file or a clean DNS, but that will be incredibly slow. I won't suggest that.

[nodew]

nslookup in windows side work well for me, since I'm already connected to an vpn.

[karuboniru]

nslookup in windows side work well for me, since I'm already connected to an vpn.

Ok, your problem is that WSL will not access the network through VPN which is set for windows, and it not easy to make a WSL program to use Windows's VPN (I mean IPSec or P2TP..)

Maybe what you need is proxy software like shadowsocks or V2ray and make them listen on certain local port. Then you can tell Linux programs to use the proxy.

[nodew]

Ok, it looks like a DNS cache issue. After reset the instance, it works now.