[mikevlz]

       The fixed-address declaration

         fixed-address address [, address ... ];

         The fixed-address declaration is used to assign one or more fixed  IP
         addresses  to a client.  It should only appear in a host declaration.
         If more than one address is supplied, then when the client boots,  it
         will be assigned the address that corresponds to the network on which
         it is booting.  If none of the addresses in the fixed-address  state-
         ment are valid for the network to which the client is connected, that
         client will not match the host  declaration  containing  that  fixed-
         address  declaration.   Each address in the fixed-address declaration
         should be either an IP address or a domain name that resolves to  one
         or more IP addresses.

Повторно указывать низя, были грабли. Надо именно списком, вот только с релеями проблемы могут быть.