Failed to resolve some websites with .hk

Asked by Max on 2017-04-16

I have browsed some of websites with the same router and ISP in Hong Kong on Ubuntu 17.04 USB live, the same version installed, Android 5.1 and Windows 10.

Some websites with suffix .hk are failed to resolve on Ubuntu, both USB live and installed one.
Websites not accessible are:
www.gov.hk
https://www.hsbc.com.hk
https://google.com.hk
http://www.discuss.com.hk/
polyu.edu.hk
www.cuhk.edu.hk

I have used the following DNS servers without success: local ISP server, Google (8.8.8.8, 8.8.4.4), CensurfriDNS (91.239.100.100, 89.233.43.71) and Verisign(64.6.64.6)

These websites have been tested with ping, firefox and web-browser-app.

But those following websites work:
google.com/ncr
google.com.tw
google.com.sg
hku.hk

A temporary fix is assigning the DNS server to OpenDNS (208.67.222.222).

Is there any way to get it normal? More info could be provided if you suggest. Thank you.

Question information

Language:
English Edit question
Status:
Answered
For:
Ubuntu Edit question
Assignee:
No assignee Edit question
Last query:
2017-04-16
Last reply:
2017-04-19

Have you tried rebooting your router? Leave it off for at least 30 seconds then power on and reboot your computer

timonoj (timonoj-gmail) said : #2

Rebooting the router didn't help. Having the same issue. Brand new installed Kubuntu 17.04. Live CD also presents same issues. Also Lubuntu 17.04. Windows machines and phones (and older linux machines) finds the pages as expected.

timonoj (timonoj-gmail) said : #3

Ok...solution found in superuser.com:
Ubuntu 17.04 can not(yet) resolve DNS server with DNSSEC support. I disable DNSSEC with this daemon. Solution: Disable DNSSEC support for the time being.

sudo mkdir -p /etc/systemd/resolved.conf.d
printf "[Resolve]\nDNSSEC=no\n" | sudo tee /etc/systemd/resolved.conf.d/no-dnssec.conf

sudo dpkg-reconfigure resolvconf
# Say yes to "prepare /etc/resolve.conf for dynamic updates?"

Great find. I suggest you report a bug and add the above text as a fix.

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