DragonFly On-Line Manual Pages

Search: Section:  

DHCP(8)                DragonFly System Manager's Manual               DHCP(8)


NAME

     dhcp -- configuring DragonFly for DHCP


DESCRIPTION

     The Dynamic Host Configuration Protocol (DHCP) allows hosts on a TCP/IP
     network to configure one or more network interfaces based on information
     collected from a DHCP server in response to a DHCP request.  This
     mechanism is often used, for example, by cable modem and DSL network
     providers to simplify network configurations for their clients/customers.

     Information typically contained within a DHCP response includes an IP
     address for the interface, subnet mask, broadcast address, router
     (gateway) listing, domain name server listing, and the interface's MTU.

     To set up DragonFly as a DHCP client:

           1.   For each interface that is to be configured via DHCP, add
                ``DHCP'' to the ifconfig_<interface> variable in /etc/rc.conf.
                See rc.conf(5) for more information on the format of this
                file.

                The /etc/network.subr script reads each of these variables at
                boot-time and runs the DHCP client, e.g., dhclient(8) or
                dhcpcd(8), for each interface that is to be configured via
                DHCP.

           2.   [Optional] To tweak settings, edit /etc/dhclient.conf (if
                dhcp_client="dhclient") or /etc/dhcpcd.conf (if
                dhcp_client="dhcpcd").  See dhclient.conf(5) and
                dhcpcd.conf(5) for details.

     To set up DragonFly as a DHCP server:

           1.   Install dhcpd(8) (available in dports(7)).

           2.   Edit /usr/local/etc/dhcp/dhcpd.conf.  See dhcpd.conf(5) and
                dhcpd(8) for details.

           3.   Edit /etc/rc.conf and set dhcpd_flags="".  This will cause
                DragonFly to start the dhcpd(8) daemon at boot-time and listen
                for DHCP requests on the local network.  To start it manually,
                execute the following command:

                      # /usr/local/sbin/dhcpd [netif1 netif2 ...]

     The DHCP client and server use the Berkeley Packet Filter (BPF).  Ensure
     the kernel has been compiled with BPF support and at least one /dev/bpf*
     file exists per broadcast network interface that is attached to the
     system.  This is almost always the case and should only be considered if
     all other troubleshooting options have failed.

     See dhcpd(8) for information on other available options.  Note, however,
     that most of the flags are useful only for debugging purposes.


FILES

     /etc/rc.conf               configuration file where DHCP client
                                configuration is set for individual interfaces
                                and dhcpd_flags must be set

     /etc/dhclient.conf         DHCP client configuration file for dhclient(8)

     /etc/dhcpcd.conf           DHCP client configuration file for dhcpcd(8)

     /usr/local/etc/dhcp/dhcpd.conf
                                DHCP server configuration file


SEE ALSO

     dhclient.conf(5), dhcpcd.conf(5), dhcpd.conf(5) (net/isc-dhcp44-server),
     dhclient(8), dhcpcd(8), dhcpd(8) (net/isc-dhcp44-server), dhcrelay(8)
     (net/isc-dhcp44-relay)

DragonFly 5.3                  October 25, 2018                  DragonFly 5.3

Search: Section: