SSH login takes very long time...sometimes

[Chuck Swiger]

Yar Tikhiy wrote:
[ ... ]
> A similar effect was observed when a `domain' line was specified
> in resolv.conf in place of `search'.
> 
> Is there a real reason to retry with a different domain when the
> nameserver doesn't respond at all?

UDP is lossy, and it may take a nameserver longer to respond that the client
resolver library is willing to wait; the fact that a nameserver didn't answer
once isn't a sure sign that it won't answer other questions, or even that it
won't answer the same question if you just wait a minute.

On the other hand, if you make 100 queries and not hear anything back, perhaps
it would be useful to log that information and possibly take action.

-- 
-Chuck