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Groups > comp.os.linux.networking > #4710

Re: Long delay when starting slrnpull

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On 2020-11-16, Richard Kettlewell <invalid@invalid.invalid> wrote:

> Charlie Gibbs <cgibbs@kltpzyxm.invalid> writes:
>
>> On 2020-11-15, Richard Kettlewell <invalid@invalid.invalid> wrote:
>>
>>> Charlie Gibbs <cgibbs@kltpzyxm.invalid> writes:
>>>
>>>> 13:41:55.720186 IP cjglap2.59960 > _gateway.domain: 15913+ A?
>>>> news.newsguy.com. (34)
>>>> 13:41:55.720217 IP cjglap2.59960 > _gateway.domain: 42553+ AAAA?
>>>> news.newsguy.com. (34)
>>>> 13:41:56.161877 IP cjglap2.47905 > _gateway.domain: 8298+ PTR?
>>>> 1.0.168.192.in-addr.arpa. (42)
>>>> 13:42:00.724932 IP cjglap2.52392 > 75.153.171.122.domain: 15913+ A?
>>>> news.newsguy.com. (34)
>>>
>>> Jorgen has explained most of the delay but you also have 4s delay here
>>> waiting for a DNS response from _gateway, whatever that is.
>>>
>>> (In general I suggest using the -n flag to tcpdump so that it doesn’t do
>>> its own DNS lookups.)
>>
>> I'll try that.  I suspect that something isn't set up properly
>> in my gateway.  Just what do those A?, AAAA?, and PTR? flags mean?
>
> A? news.newsguy.com:
>   A request for the IPv4 addresses for news.newsguy.com.
> AAAA? news.newsguy.com:
>   A request for the IPv6 addresses for news.newsguy.com.
> PTR? 1.0.168.192.in-addr.arpa:
>   A requeswt for the names corresponding to 192.168.0.1.

Thanks.  Looks like it's time to study the tcpdump man page...

-- 
/~\  Charlie Gibbs                  |  "Some of you may die,
\ /  <cgibbs@kltpzyxm.invalid>      |  but it's sacrifice
 X   I'm really at ac.dekanfrus     |  I'm willing to make."
/ \  if you read it the right way.  |    -- Lord Farquaad (Shrek)

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Thread

Long delay when starting slrnpull Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2020-11-15 04:31 +0000
  Re: Long delay when starting slrnpull Jorgen Grahn <grahn+nntp@snipabacken.se> - 2020-11-15 08:00 +0000
    Re: Long delay when starting slrnpull Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2020-11-15 18:03 +0000
  Re: Long delay when starting slrnpull Richard Kettlewell <invalid@invalid.invalid> - 2020-11-15 11:49 +0000
    Re: Long delay when starting slrnpull Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2020-11-15 18:03 +0000
      Re: Long delay when starting slrnpull Richard Kettlewell <invalid@invalid.invalid> - 2020-11-16 17:27 +0000
        Re: Long delay when starting slrnpull Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2020-11-17 00:18 +0000

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