zone transfers sticking on one port?

Jim Reid jim at rfc1035.com
Tue Mar 16 20:57:50 UTC 2004


>>>>> "Chris" == Chris Fabri <fabric at northwestern.edu> writes:

    Chris> Isn't named going to endlessly query on the same port if
    Chris> it's can't get through?  That's essentially what was
    Chris> happening here on 39999.  If the server was down, wouldn't
    Chris> every query fail and keep hammering away on whatever port
    Chris> it happened to choose?

Perhaps. If the name server always has this forbidden port number --
or always gets this from the kernel -- that's what will happen. But to
the name server this just looks like yet another failed zone transfer.
It doesn't know or care why the connection failed. It just knows that it
couldn't establish a TCP connection to the other server. That gets
logged in the hope that an administrator will do something about the
problem. There's nothing else the name server can do by itself.



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