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Re: kern/54553: Successful TFTP boot ends with error packet

The following reply was made to PR kern/54553; it has been noted by GNATS.

From: Andreas Gustafsson <>
To: Valery Ushakov <>
Subject: Re: kern/54553: Successful TFTP boot ends with error packet
Date: Tue, 17 Sep 2019 17:50:18 +0300

 Valery Ushakov wrote:
 >  What is the actual size of netbsd-install?
 I no longer have the file, sorry.
 >  It looks like the client
 >  decided it doesn't need the rest of the file (e.g. it's done reading
 >  ELF code/data segments and doesn't need e.g. symbol table or strings,
 >  etc) and terminates the transfer early, telling the sender the sender
 >  doesn't need to worry and resend the last packet after timeouts.
 >  I.e. it looks perfectly fine and courteous.  If that error packet
 >  bother you you can compile with -DTFTP_NOTERMINATE, but consider that
 >  the alternative will be seeing the server resending the last unacked
 >  packet.
 I see.  That does make sense given the limitations of the protocol,
 even though it's rather confusing.  Thanks for the explanation.
 Andreas Gustafsson,

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