DHCPCD-RUN-HOOKS(8) System Manager's Manual DHCPCD-RUN-HOOKS(8)NAMEdhcpcd-run-hooks — DHCP client configuration script
DESCRIPTIONdhcpcd-run-hooks is used by dhcpcd(8) to run any system and user defined
hook scripts. System hook scripts are found in /lib64/dhcpcd-hooks and
the user defined hooks are /etc/dhcpcd.enter-hook. and
/etc/dhcpcd.exit-hook. The default install supplies hook scripts for
configuring /etc/resolv.conf and the hostname. Your distribution may
have included other hook scripts to say configure ntp or ypbind. A test
hook is also supplied that simply echos the dhcp variables to the console
from DISCOVER message.
Each time dhcpcd-run-hooks is invoked, $interface is set to the interface
that dhcpcd is run on and $reason is to the reason why dhcpcd-run-hooks
was invoked. DHCP information to be configured is held in variables
starting with the word new_ and old DHCP information to be removed is
held in variables starting with the word old_. dhcpcd can display the
full list of variables it knows how about by using the -V, --variables
argument.
Here's a list of reasons why dhcpcd-run-hooks could be invoked:
PREINIT dhcpcd is starting up and any pre-initialisation should be done.
CARRIER dhcpcd has detected the carrier is up. This is generally just a
notification and no action need be taken.
INFORM dhcpcd informed a DHCP server about it's address and obtained
other configuration details.
BOUND dhcpcd obtained a new lease from a DHCP server.
RENEW dhcpcd renewed it's lease.
REBIND dhcpcd has rebound to a new DHCP server.
REBOOT dhcpcd successfully requested a lease from a DHCP server.
IPV4LL dhcpcd failed to contact any DHCP servers but did obtain an
IPV4LL address.
STATIC dhcpcd has been configured with a static configuration which has
not been obtained from a DHCP server.
3RDPARTY
dhcpcd is monitoring the interface for a 3rd party to give it an
IP address.
TIMEOUT dhcpcd failed to contact any DHCP servers but was able to use an
old lease.
EXPIRE dhcpcd's lease or state expired and it failed to obtain a new
one.
NAK dhcpcd received a NAK from the DHCP server. This should be
treated as EXPIRE.
NOCARRIER
dhcpcd lost the carrier. The cable may have been unplugged or
association to the wireless point lost.
FAIL dhcpcd failed to operate on the interface. This normally hap‐
pens when dhcpcd does not support the raw interface, which means
it cannot work as a DHCP or ZeroConf client. Static configura‐
tion and DHCP INFORM is still allowed.
STOP dhcpcd stopped running on the interface.
TEST dhcpcd received an OFFER from a DHCP server but will not config‐
ure the interface. This is primarily used to test the variables
are filled correctly for the script to process them.
FILES
When dhcpcd-run-hooks runs, it loads /etc/dhcpcd.enter-hook and any
scripts found in /lib64/dhcpcd-hooks in a lexical order and then finally
/etc/dhcpcd.exit-hook
SEE ALSOdhcpcd(8)AUTHORS
Roy Marples ⟨roy@marples.name⟩
BUGS
Please report them to http://roy.marples.name/projects/dhcpcd
BSD March 23, 2009 BSD
