Need Help With DNS/DNSMasq Config

[djtech2k]

For nslookup, from dhcp clients I used both hostname and fqdn, same result.

The only Linux I have on my intranet is the router itself.

 

[ColinTaylor]

Could you try this on your Windows PC and post the output.

nslookup
> set type=any
> Target_Name

> set type=soa
> Target_Name

> exit

 

[djtech2k]

Ok, I tried that. The "any" type came back with the "old"IP.

The "soa", first returned the router name/IP, then it came back with the info about my domain, like nameserver, etc. That information was correct.

 

[ColinTaylor]

Can you post the complete output please rather than describing it.

 

[djtech2k]

C:\Windows\system32>nslookup
Default Server: router.asus.com
Address: 10.10.10.1

> set type=soa
> target_server.domain.fqdn
Server: router.asus.com
Address: 10.10.10.1

lab.home
primary name server = DNS2.domain.fqdn
responsible mail addr = hostmaster.domain.fqdn
serial = 243692
refresh = 900 (15 mins)
retry = 600 (10 mins)
expire = 86400 (1 day)
default TTL = 3600 (1 hour)
DNS2.domain.fqdn internet address = 10.10.10.254

 

[djtech2k]

Any ideas?

 

[ColinTaylor]

I not sure Windows will give enough information to determine the problem. As a last attempt, can you try the following command. And post the complete and unedited output.

nslookup
> set debug
> set type=any
> Target_Name.lab.home

 

[djtech2k]

Here is the output. The IP it displays is an "old" IP. To force it, I added a 2nd NIC and set it to static, then disabled the old one. I then forced DNS registration and verified that the IP in DNS was correct. So thats how I set this up.

C:\Windows\system32>nslookup
Default Server: router.asus.com
Address: 192.168.99.1

> set debug
> set type=any
> home-scsm.lab.home
Server: router.asus.com
Address: 192.168.99.1

------------
Got answer:
HEADER:
opcode = QUERY, id = 2, rcode = NXDOMAIN
header flags: response, auth. answer, want recursion, recursion avail.
questions = 1, answers = 0, authority records = 1, additional = 0

QUESTIONS:
home-scsm.lab.home.lab.home, type = ANY, class = IN
AUTHORITY RECORDS:
-> lab.home
ttl = 3600 (1 hour)
primary name server = home-dc2.lab.home
responsible mail addr = hostmaster.lab.home
serial = 243900
refresh = 900 (15 mins)
retry = 600 (10 mins)
expire = 86400 (1 day)
default TTL = 3600 (1 hour)

------------
------------
Got answer:
HEADER:
opcode = QUERY, id = 3, rcode = NOERROR
header flags: response, auth. answer, want recursion, recursion avail.
questions = 1, answers = 1, authority records = 0, additional = 0

QUESTIONS:
home-scsm.lab.home, type = ANY, class = IN
ANSWERS:
-> home-scsm.lab.home
internet address = 192.168.99.58
ttl = 0 (0 secs)

------------
home-scsm.lab.home
internet address = 192.168.99.58
ttl = 0 (0 secs)
>

 

[ColinTaylor]

This looks wrong to me (but I'm not an expert):

QUESTIONS:
home-scsm.lab.home.lab.home, type = ANY, class = IN

Can you post the complete output of ipconfig /all from the client PC.

Edit: And the output of ipconfig /all from home-scsm machine.

I suspect you might have both a primary dns suffix and a connection-specific one. Although if you've changed your adapter or settings that information is probably lost now.

 

[djtech2k]

I am really baffled by this. I have looked everywhere and I cannot find any DNS Client settings being applied. All I have is a GPO that forces it to register, no settings.

When I run the same nslookup test, aDNS Suffix in nslookup. IDK if the suffix issue is the main problem, but as of now I cannot find the resolution.