[syslinux] pxelinux 4.03 taking forever to find ..../pxelinux.cfg/default

[Jeffrey Hutzelman]

--On Tuesday, November 16, 2010 09:19:02 PM -0500 Gene Cumm 
<gene.cumm at gmail.com> wrote:

> It's an interesting idea but I didn't think PXE clients register with
> DNS or present a hostname in the DHCP request.  I also don't know of
> any TFTPD that would even think of trying to use a name service (DNS,
> /etc/hosts, etc) to resolve an identity.  I think that if there was a
> TFTPD that could do this (optionally or not), this feature should only
> be reserved for PXE use on a more secured networks where you know the
> identity of every host (ie complete /etc/hosts and /etc/ethers) and
> not used on a more general purpose network.  (But why would you be
> using PXE, an insecure protocol that trusts the network and could
> compromise a machine, on a secured network?)

I could see a TFTP server using DNS to reverse-resolve client addresses for 
logging purposes.  And in some environments (such as ours), the DHCP 
servers issue DNS updates for every host that boots.

-- Jeff