Cannot resolve pi hostname

agneev · July 30, 2018, 10:10am

Please follow the below template, it will help us to help you!

My Pi's username is 'pi', it's IP address is 10.0.0.6.

Expected Behaviour:

should resolve automatically:

ssh pi@pi

Actual Behaviour:

ssh pi@pi

results in:

ssh: Could not resolve hostname pi: nodename nor servname provided, or not known

Debug Token:

5n3qdsrukm

agneev · July 30, 2018, 11:09am

Yes, that works.

How can I rename "pi.hole" to "pi"?

Mcat12 · August 1, 2018, 12:43am

You have the correct mapping already in /etc/pihole/local.list. What is the output of this command?

nslookup pi 10.0.0.6

agneev · August 7, 2018, 6:50pm

Sorry for the late reply.
It's:

root@pi:/home/pi# nslookup pi 10.0.0.6
Server: 10.0.0.6
Address: 10.0.0.6#53

Name: pi
Address: 10.0.0.6

agneev · August 7, 2018, 6:53pm

Also, the output of /etc/pihole/local.list:

10.0.0.6 pi
10.0.0.6 pi.hole

Mcat12 · August 8, 2018, 10:48pm

What is the output of that nslookup command on the machine that was having the issue?

agneev · August 9, 2018, 2:01pm

It's:

pi@pi:~ $ nslookup pi 10.0.0.6
Server: 10.0.0.6
Address: 10.0.0.6#53

Name: pi
Address: 10.0.0.6

devnull · August 9, 2018, 3:51pm

We need the output out of the machine you are trying to connect from. Not from the pi itself, please.

agneev · August 9, 2018, 4:01pm

Right.

MacBook-Pro:~ Agneev$ nslookup pi 10.0.0.6
Server: 10.0.0.6
Address: 10.0.0.6#53

Name: pi
Address: 10.0.0.6

agneev · August 9, 2018, 4:10pm

If I traceroute "pi":

MacBook-Pro:~ Agneev$ traceroute pi
traceroute: unknown host pi

But if I traceroute to "pi.hole":

MacBook-Pro:~ Agneev$ traceroute pi.hole
traceroute to pi.hole (10.0.0.6), 64 hops max, 52 byte packets
1 pi (10.0.0.6) 2.700 ms 2.702 ms 3.962 ms

Notice how pi.hole points to pi.

Mcat12 · August 9, 2018, 5:48pm

Check that you are only using Pi-hole as your DNS server, and clear the DNS cache. Also run this on the MacBook: nslookup pi

agneev · August 9, 2018, 5:57pm

In my router's web UI:

My Router IP is 10.0.0.1.

MacBook-Pro:~ Agneev$ nslookup pi
Server: 10.0.0.1
Address: 10.0.0.1#53

Name: pi
Address: 10.0.0.6

agneev · August 9, 2018, 5:58pm

Also how do I clear DNS cache?
Is it the equivalent of "Flush logs"? If so, I have already done it.

Mcat12 · August 9, 2018, 5:59pm

Google "Mac flush DNS cache"

agneev · August 9, 2018, 6:00pm

sudo killall -HUP mDNSResponder

Done.

Mcat12 · August 9, 2018, 6:02pm

The DNS servers are returning the right information, but it seems that your MacBook is not doing something right. Do you see queries in the Query Log (or pihole -t) when you run the traceroute or try to SSH?

agneev · August 9, 2018, 6:07pm

On my other computer:

Mcat12 · August 9, 2018, 6:12pm

Does that one also properly resolve via nslookup pi? Try ssh -vvv pi@pi

jacob.salmela · August 9, 2018, 11:00pm

From your Mac, what is the output of

scutil --dns

This command shows the true order of the nameserver's your Mac is using.

agneev · August 10, 2018, 5:27pm

nslookup pi:

C:\Users\agnee>nslookup pi
Server: router.asus.com
Address: 10.0.0.1

*** router.asus.com can't find pi: Non-existent domain

ssh -vvv pi@pi:

C:\Users\agnee>ssh -vvv pi@pi
OpenSSH_for_Windows_7.6p1, LibreSSL 2.6.4
debug3: Failed to open file:C:\Users\agnee/.ssh/config error:2
debug3: Failed to open file:C:\ProgramData\ssh/ssh_config error:2
debug2: resolving "pi" port 22
ssh: Could not resolve hostname pi: The requested name is valid, but no data of the requested type was found.