Re: DHCP vs RARP?

[Robert Elz <kre%munnari.OZ.AU@localhost>]

    Date:        Sun, 5 Sep 2021 17:52:32 -0400 (EDT)
    From:        Mouse <mouse%Rodents-Montreal.ORG@localhost>
    Message-ID:  <202109052152.RAA22246%Stone.Rodents-Montreal.ORG@localhost>

  | As far as I can tell it is.  They are all formatted the same way (not
  | surprising, since I generated it mechanically from /etc/ethers), and
  | commenting out all but one (and restarting dhcpd) makes it work for
  | that one.

It sounds as if you might be doing (to start with  the example in the
dhcpd man page)

            host haagen {
              hardware ethernet 08:00:2b:4c:59:23;
	      hardware ethernet 08:00:12:33:45:66;
	      hardware ethernet 08:00:ff:ee:dd:b0;
              fixed-address 239.252.197.9;
              filename "/tftpboot/haagen.boot";
            }

or something like it, rather than

            host haagen1 {
              hardware ethernet 08:00:2b:4c:59:23;
              fixed-address 239.252.197.9;
              filename "/tftpboot/haagen.boot";
            }
            host haagen2 {
              hardware ethernet 08:00:12:33:45:6;
              fixed-address 239.252.197.9;
              filename "/tftpboot/haagen.boot";
            }
            host haagen3 {
              hardware ethernet 08:00:ff:ee:dd:b0;
              fixed-address 239.252.197.9;
              filename "/tftpboot/haagen.boot";
            }

  | I actually was surprised I
  | didn't get errors upon including multiple `hardware ethernet' clauses.

Generating an error for multiple mac addr specs is one possibility,
simply discarding earlier ones and using the last encountered is another.

kre