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kurisu

DNS resolution timeout / failures

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kurisu

Using the TorGuard VPN-provided DNS servers, occasionally I have lookup failures. Today I noticed all of FiiO's web sites failing to resolve:

  • fiio.net
  • fiio.com
  • fiio.me

 

Although their site loaded fine when accessed by its IP. The usual web-based down detectors also showed the web sites were up.

I've had this before on one of my domains - nameserver failures until I did an nslookup, at which point it started resolving in a browser. However this didn't work for the fiio domains:

 

Quote
C:\Users\me>nslookup fiio.net
Server:  UnKnown
Address:  10.9.0.1

DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
*** Request to UnKnown timed-out

C:\Users\me>nslookup fiio.me
Server:  UnKnown
Address:  10.9.0.1

*** UnKnown can't find fiio.me: Server failed

C:\Users\me>nslookup fiio.com
Server:  UnKnown
Address:  10.9.0.1

DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
*** Request to UnKnown timed-out

 

 

And so on. In verbose mode:

Quote
> set d2
> set type=A
> fiio.me
Server:  UnKnown
Address:  10.9.0.1

------------
SendRequest(), len 25
    HEADER:
        opcode = QUERY, id = 14, rcode = NOERROR
        header flags:  query, want recursion
        questions = 1,  answers = 0,  authority records = 0,  additional = 0

    QUESTIONS:
        fiio.me, type = A, class = IN

------------
------------
Got answer (25 bytes):
    HEADER:
        opcode = QUERY, id = 14, rcode = SERVFAIL
        header flags:  response, want recursion, recursion avail.
        questions = 1,  answers = 0,  authority records = 0,  additional = 0

    QUESTIONS:
        fiio.me, type = A, class = IN

------------
------------
SendRequest(), len 25
    HEADER:
        opcode = QUERY, id = 15, rcode = NOERROR
        header flags:  query, want recursion
        questions = 1,  answers = 0,  authority records = 0,  additional = 0

    QUESTIONS:
        fiio.me, type = A, class = IN

------------
------------
Got answer (25 bytes):
    HEADER:
        opcode = QUERY, id = 15, rcode = SERVFAIL
        header flags:  response, want recursion, recursion avail.
        questions = 1,  answers = 0,  authority records = 0,  additional = 0

    QUESTIONS:
        fiio.me, type = A, class = IN

------------
*** UnKnown can't find fiio.me: Server failed

 

 

Same with secondary server,

Quote
nslookup fiio.me 10.8.0.1
Server:  UnKnown
Address:  10.8.0.1

*** UnKnown can't find fiio.me: Server failed

 

 

Timeouts across the board.

If I specify a different nameserver, all these domains resolve instantly. However I want to keep my DNS traffic on-net while using a VPN but these timeouts obviously cause problems :)

 

Are you aware of any issues with DNS @Support?

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kurisu

Further problems with another domain (a personal one in this case), hosted on afraid.org - a large, competently run DNS hosting provider. Same error result from nslookup again:

C:\Users\me>nslookup <obscured-for-privacy>
Server:  UnKnown
Address:  10.9.0.1

*** UnKnown can't find <obscured-for-privacy> Server failed

My ISP's DNS servers resolved it instantly, as did three other connections with three different providers on three different devices. Torguard DNS resolution seems to have problems with some stuff but I don't understand why.

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