DHCPCD.CONF(5) File Formats Manual DHCPCD.CONF(5)
NAME
dhcpcd.conf — dhcpcd configuration file
DESCRIPTION
Although dhcpcd can do everything from the command line, there are cases
where it's just easier to do it once in a configuration file. Most of
the options found in dhcpcd(8) can be used here. The first word on the
line is the option and the rest of the line is the value. Leading and
trailing whitespace for the option and value are trimmed. You can es-
cape characters in the value using the \ character. Comments can be
prefixed with the # character. String values should be quoted with the
" character.
Here's a list of available options:
allowinterfaces pattern
When discovering interfaces, the interface name must match
pattern which is a space or comma separated list of patterns
passed to fnmatch(3). If the same interface is matched in
denyinterfaces then it is still denied.
denyinterfaces pattern
When discovering interfaces, the interface name must not match
pattern which is a space or comma separated list of patterns
passed to fnmatch(3).
anonymous
Enables Anonymity Profiles for DHCP, RFC 7844. Any DUID is ig-
nored and ClientID is set to LL only. All non essential options
are then masked at this point, but they could be unmasked by ex-
plicitly requesting the option after the anonymous option is
processed. As such, the anonymous option should be the last op-
tion in the configuration unless you really want to send some-
thing which could identify you. dhcpcd will not try and reboot
an old lease, it will go straight into DISCOVER/SOLICIT.
randomise_hwaddr
Forces a hardware address randomisation when the interface is
brought up or when the carrier is lost. This is generally used
in tandem with the anonymous option.
arping address [address]
dhcpcd will arping each address in order before attempting DHCP.
If an address is found, we will select the replying hardware ad-
dress as the profile, otherwise the IP address. Example:
interface bge0
arping 192.168.0.1
# My specific 192.168.0.1 network
profile dd:ee:aa:dd:bb:ee
static ip_address=192.168.0.10/24
# A generic 192.168.0.1 network
profile 192.168.0.1
static ip_address=192.168.0.98/24
authprotocol protocol [algorithm [rdm]]
Authenticate DHCP messages. See the Supported Authentication
Protocols section. If protocol is token then algorithm is
snd_secretid/rcv_secretid so you can send and receive different
tokens.
authtoken secretid realm expire key
Define a shared key for use in authentication. realm can be ""
to for use with the delayed protocol. expire is the date the
token expires and should be formatted "yyy-mm-dd HH:MM". You
can use the keyword forever or 0 which means the token never ex-
pires. For the token protocol, secretid needs to be 0 and realm
needs to be "". If dhcpcd has the error
dhcp_auth_encode: Invalid argument
then it means that dhcpcd could not find the correct authentica-
tion token in your configuration.
background
Fork to the background immediately. This is useful for startup
scripts which don't disable link messages for carrier status.
blacklist address[/cidr]
Ignores all packets from address[/cidr].
whitelist address[/cidr]
Only accept packets from address[/cidr]. blacklist is ignored
if whitelist is set.
bootp Be a BOOTP client. Basically, this just doesn't send a DHCP
Message Type option and will only interact with a BOOTP server.
All other DHCP options still work.
broadcast
Instructs the DHCP server to broadcast replies back to the
client. Normally this is only set for non-Ethernet interfaces,
such as FireWire and InfiniBand. In most cases, dhcpcd will set
this automatically.
controlgroup group
Sets the group ownership of /run/dhcpcd/sock so that users other
than root can connect to dhcpcd.
debug Echo debug messages to the stderr and syslog.
dev value
Load the value /dev management module. dhcpcd will load the
first one found to work, if any.
env value
Push value to the environment for use in dhcpcd-run-hooks(8).
For example, you can force the hostname hook to always set the
hostname with env force_hostname=YES. Or set which driver
wpa_supplicant(8) should use with env
wpa_supplicant_driver=nl80211
If the hostname is set, it will be will set to the FQDN if pos-
sible as per RFC 4702, section 3.1. If the FQDN option is miss-
ing, dhcpcd will still try and set a FQDN from the hostname and
domain options for consistency. To override this, set env
hostname_fqdn=[YES|NO|SERVER]. A value of SERVER means just
what the server says, don't manipulate it. This could lead to
an inconsistent hostname on a DHCPv4 and DHCPv6 network where
the DHCPv4 hostname is short and the DHCPv6 has an FQDN. DHCPv6
has no hostname option.
clientid string
Send the clientid. If the string is of the format 01:02:03 then
it is encoded as hex. For interfaces whose hardware address is
longer than 8 bytes, or if the clientid is an empty string then
dhcpcd sends a default clientid of the hardware family and the
hardware address.
duid [ll | lt | uuid | value]
Use a DHCP Unique Identifier. If a system UUID is available,
that will be used to create a DUID-UUID, otherwise if persistent
storage is available then a DUID-LLT (link local address + time)
is generated, otherwise DUID-LL is generated (link local ad-
dress). The DUID type can be hinted as an optional parameter if
the file /var/lib/dhcpcd/duid does not exist. If not ll, lt or
uuid then value will be converted from 00:11:22:33 format.
This, plus the IAID will be used as the clientid. The DUID gen-
erated will be held in /var/lib/dhcpcd/duid and should not be
copied to other hosts. This file also takes precedence over the
above rules except for setting a value.
iaid iaid
Set the Interface Association Identifier to iaid. This option
must be used in an interface block. This defaults to the VLANID
(prefixed with 0xff) for the interface if set, otherwise the
last 4 bytes of the hardware address assigned to the interface.
Each instance of this should be unique within the scope of the
client and dhcpcd warns if a conflict is detected. If there is
a conflict, it is only a problem if the conflicted IAIDs are
used on the same network.
dhcp Enable DHCP on the interface, on by default.
dhcp6 Enable DHCPv6 on the interface, on by default.
ipv4 Enable IPv4 on the interface, on by default.
ipv6 Enable IPv6 on the interface, on by default.
request [address]
Request the address in the DHCP DISCOVER message. There is no
guarantee this is the address the DHCP server will actually
give. If no address is given then the first address currently
assigned to the interface is used.
inform [address[/cidr[/broadcast_address]]]
Behaves like request as above, but sends a DHCP INFORM instead
of DISCOVER/REQUEST. This does not get a lease as such, just
notifies the DHCP server of the address in use. You should also
include the optional cidr network number in case the address is
not already configured on the interface. dhcpcd remains running
and pretends it has an infinite lease. dhcpcd will not de-con-
figure the interface when it exits. If dhcpcd fails to contact
a DHCP server then it returns a failure instead of falling back
on IPv4LL.
inform6
Performs a DHCPv6 Information Request. No address is requested
or specified, but all other DHCPv6 options are allowed. This is
normally performed automatically when an IPv6 Router Advertise-
ment indicates that the client should perform this operation.
This option is only needed when dhcpcd is not processing IPv6 RA
messages and the need for a DHCPv6 Information Request exists.
persistent
dhcpcd normally de-configures the interface and configuration
when it exits. Sometimes, this isn't desirable if, for example,
you have root mounted over NFS or SSH clients connect to this
host and they need to be notified of the host shutting down.
You can use this option to stop this from happening.
fallback profile
Fall back to using this profile if DHCP fails. This allows you
to configure a static profile instead of using ZeroConf.
fallback_time seconds
Start fallback after seconds. The default is 5 seconds.
hostname name
Sends the hostname name to the DHCP server so it can be regis-
tered in DNS. If name is an empty string then the current sys-
tem hostname is sent. If name is a FQDN (i.e., contains a .)
then it will be encoded as such.
hostname_short
Sends the short hostname to the DHCP server instead of the FQDN.
This is useful because DHCP servers will not register the FQDN
in their DNS if the domain part does not match theirs.
Also, see the env option above to control how the hostname is
set on the host.
ia_na [iaid [/ address]]
Request a DHCPv6 Normal Address for iaid. iaid defaults to the
iaid option as described above. You can request more than one
ia_na by specifying a unique iaid for each one.
ia_ta [iaid]
Request a DHCPv6 Temporary Address for iaid. You can request
more than one ia_ta by specifying a unique iaid for each one.
ia_pd [iaid [/ prefix / prefix_len] [interface [/ sla_id [/ prefix_len
[/ suffix]]]]]
Request a DHCPv6 Delegated Prefix for iaid. This option must be
used in an interface block. Unless a sla_id of 0 is assigned
with the same resultant prefix length as the delegation, a re-
ject route is installed for the Delegated Prefix to stop unallo-
cated addresses being resolved upstream. If no interface is
given then we will assign a prefix to every other interface with
a sla_id equivalent to the interface index assigned by the OS.
Otherwise addresses are only assigned for each interface and
sla_id. To avoid delegating to any interface, use - as the in-
valid interface name. Each assigned address will have a suffix,
defaulting to 1. If the suffix is 0 then a SLAAC address is as-
signed. You cannot assign a prefix to the requesting interface
unless the DHCPv6 server supports the RFC 6603 Prefix Exclude
Option. dhcpcd has to be running for all the interfaces it is
delegating to. A default prefix_len of 64 is assumed, unless
the maximum sla_id does not fit. In this case prefix_len is in-
creased to the highest multiple of 8 that can accommodate the
sla_id. sla_id is an integer which must be unique inside the
iaid and is added to the prefix which must fit inside prefix_len
less the length of the delegated prefix. You can specify multi-
ple interface / sla_id / prefix_len per ia_pd, space separated.
IPv6RS should be disabled globally when requesting a Prefix Del-
egation.
In the following example eth0 is the externally facing interface
to be configured for both IPv4 and IPv6. The DHCPv4 server will
provide us with an IPv4 address and a default route. The DHCPv6
server is going to provide us with an IPv6 address, a default
route and a /64 subnet to be delegated to the internal inter-
face. The eth1 interface will be automatically configured for
IPv6 using the first address (::1) from the delegated prefix. A
second prefix is requested and assigned to two other interfaces.
rtadvd(8) can be used with an empty configuration file on eth1,
eth2 and eth3, to provide automatic IPv6 address configuration
for the internal network.
noipv6rs # disable routing solicitation
denyinterfaces eth2 # Don't touch eth2 at all
interface eth0
ipv6rs # enable routing solicitation for eth0
ia_na 1 # request an IPv6 address
ia_pd 2 eth1/0 # request a PD and assign it to eth1
ia_pd 3 eth2/1 eth3/2 # req a PD and assign it to eth2 and eth3
ia_pd 4 - # request a PD but don't assign it
ipv4only
Only configure IPv4.
ipv6only
Only configure IPv6.
fqdn [disable | none | ptr | both]
none will not ask the DHCP server to update DNS. ptr just asks
the DHCP server to update the PTR record of the host in DNS,
whereas both also updates the A record. disable will disable
the FQDN option. The default is both. dhcpcd itself never does
any DNS updates. dhcpcd encodes the FQDN hostname as specified
in RFC 1035.
interface interface
Subsequent options are only parsed for this interface.
ipv4ll_time seconds
Wait for seconds before starting IPv4LL. The default is 5 sec-
onds.
ipv6ra_autoconf
Generate SLAAC addresses for each Prefix advertised by an IPv6
Router Advertisement message with the Auto flag set. On by de-
fault.
ipv6ra_noautoconf
Disables the above option.
ipv6ra_fork
By default, when dhcpcd receives an IPv6 Router Advertisement,
dhcpcd will only fork to the background if the RA contains at
least one unexpired RDNSS option and a valid prefix or no DHCPv6
instruction. Set this option so to make dhcpcd always fork on a
RA.
ipv6rs Enables IPv6 Router Advertisement solicitation. This is on by
default, but is documented here in the case where it is disabled
globally but needs to be enabled for one interface.
leasetime seconds
Request DHCP a lease time of seconds. -1 represents an infinite
lease time. By default dhcpcd does not request any lease time
and leaves it in the hands of the DHCP server. It is not possi-
ble to request a DHCPv6 lease time as this is not RFC compliant.
See RFC 8415 21.4, 21.6, 21.21 and 21.22.
link_rcvbuf size
Override the size of the link receive buffer from the kernel de-
fault. While dhcpcd will recover from link buffer overflows,
this may not be desirable on heavily loaded systems.
logfile logfile
Writes to the specified logfile. dhcpcd still writes to
syslog(3). The logfile is reopened when dhcpcd receives the
SIGUSR2 signal.
metric metric
Metrics are used to prefer an interface over another one, lowest
wins. dhcpcd will supply a default metric of 1000 +
if_nametoindex(3). This will be offset by 2000 for wireless in-
terfaces, with additional offsets of 1000000 for IPv4LL and
2000000 for roaming interfaces.
mudurl url
Specifies the URL for a Manufacturer Usage Description (MUD).
The description is used by upstream network devices to instanti-
ate any desired access lists. See draft-ietf-opsawg-mud for
more information.
noalias
Any pre-existing IPv4 addresses will be removed from the inter-
face when adding a new IPv4 address.
noarp Don't send any ARP requests. This also disables IPv4LL.
arp_persistdefence
Keep the IP address even if defence fails upon IP Address con-
flict.
noauthrequired
Don't require authentication even though we requested it. Also
allows FORCERENEW and RECONFIGURE messages without authentica-
tion.
nodelay
Don't delay for an initial randomised time when starting proto-
cols.
nodev Don't load /dev management modules.
nodhcp Don't start DHCP or listen to DHCP messages. This is only use-
ful when allowing IPv4LL.
nodhcp6
Don't start DHCPv6 or listen to DHCPv6 messages. Normally
DHCPv6 is started by an IPv6 Router Advertisement instruction or
configuration.
nogateway
Don't install any default routes.
gateway
Install a default route if available (default).
nohook script
Don't run this hook script. Matches full name, or prefixed with
2 numbers optionally ending with .sh.
So to stop dhcpcd from touching your DNS settings or starting
wpa_supplicant you would do:-
nohook resolv.conf, wpa_supplicant
noipv4 Don't attempt to configure an IPv4 address.
noipv4ll
Don't attempt to obtain an IPv4LL address if we failed to get
one via DHCP. See RFC 3927.
noipv6 Don't solicit or accept IPv6 Router Advertisements and DHCPv6.
noipv6rs
Don't solicit or accept IPv6 Router Advertisements.
nolink Don't receive link messages about carrier status. You should
only set this for buggy interface drivers.
noup Don't bring the interface up when in manager mode.
option option
Requests the option from the server. It can be a variable to be
used in dhcpcd-run-hooks(8) or the numerical value. You can
specify more options separated by commas, spaces or more option
lines. Prepend dhcp6_ to option to request a DHCPv6 option. If
no DHCPv6 options are configured, then DHCPv4 options are mapped
to equivalent DHCPv6 options.
Prepend nd_ to option to handle ND options, but this only works
for the nooption, reject and require options.
To see a list of options you can use, call dhcpcd with the -V,
--variables argument.
nooption option
Remove the option from the message before it's processed.
require option
Requires the option to be present in all messages, otherwise the
message is ignored. To enforce that dhcpcd only responds to
DHCP servers and not BOOTP servers, you can require
dhcp_message_type. This isn't an exact science though because a
BOOTP server can send DHCP-like options.
reject option
Reject a message that contains the option. This is useful when
you cannot use require to select / de-select BOOTP messages.
destination option
If dhcpcd.conf detects an address added to a point to point in-
terface (PPP, TUN, etc) then it will set the listed DHCP options
to the destination address of the interface.
profile name
Subsequent options are only parsed for this profile name.
quiet Suppress any dhcpcd output to the console, except for errors.
reboot seconds
Allow reboot seconds before moving to the DISCOVER phase if we
have an old lease to use. Allow reboot seconds before starting
fallback states from the DISCOVER phase. IPv4LL is started when
the first reboot timeout is reached. The default is 5 seconds.
A setting of 0 seconds causes dhcpcd.conf to skip the reboot
phase and go straight into DISCOVER. This is desirable for mo-
bile users because if you change from network A to network B and
they use the same subnet and the address from network A isn't in
use on network B, then the DHCP server will remain silent even
if authoritative which means dhcpcd will timeout before moving
back to the DISCOVER phase. This has no effect on DHCPv6 other
than skipping the reboot phase.
release
dhcpcd will release the lease prior to stopping the interface.
script script
Use script instead of the default
/usr/lib/dhcpcd/dhcpcd-run-hooks.
request_time seconds
Request the lease for seconds before going back to DISCOVER.
The default is 180 seconds.
ssid ssid
Subsequent options are only parsed for this wireless ssid.
slaac hwaddr | private | token token [temp | temporary]
Selects the interface identifier used for SLAAC generated IPv6
addresses. If private is used, a RFC 7217 address is generated.
If token token is used then the token is combined with the pre-
fix to make the final address. The temporary directive will
create a temporary address for the prefix as well.
static value
Configures a static value. If you set ip_address then dhcpcd
will not attempt to obtain a lease and will just use the value
for the address with an infinite lease time. If you set an
empty value this removes all prior static allocations to the
same value. This is useful when using profiles and in the case
of ip_address it will remove the static allocation. Note that
setting 0.0.0.0 keeps the static allocation but waits for a 3rd-
party to configure the address. If you set ip6_address, dhcpcd
will continue auto-configuration as normal.
Here is an example which configures two static address, overrid-
ing the default IPv4 broadcast address, an IPv4 router, DNS and
disables IPv6 auto-configuration. You could also use the
inform6 command here if you wished to obtain more information
via DHCPv6. For IPv4, you should use the inform ipaddress op-
tion instead of setting a static address.
interface eth0
noipv6rs
static ip_address=192.168.0.10/24
static broadcast_address=192.168.0.63
static ip6_address=fd51:42f8:caae:d92e::ff/64
static routers=192.168.0.1
static domain_name_servers=192.168.0.1
fd51:42f8:caae:d92e::1
Here is an example for PPP which gives the destination a default
route. It uses the special destination keyword to insert the
destination address into the value.
interface ppp0
static ip_address=0.0.0.0
destination routers
timeout seconds
Time out after seconds, instead of the default 30. A setting of
0 seconds causes dhcpcd to wait forever to get a lease. If
dhcpcd is working on a single interface then dhcpcd will exit
when a timeout occurs, otherwise dhcpcd will fork into the back-
ground. If using IPv4LL then dhcpcd start the IPv4LL process
after the timeout and then wait a little longer before really
timing out.
userclass string
Tag the DHCPv4 message with the userclass. You can specify more
than one.
msuserclass string
Tag the DHCPv4 mesasge with the Microsoft userclass. Unlike the
userclass option, this one can only be added once. It should
only be used for Microsoft DHCP servers and the vendorclassid
should be set to "MSFT 98" or "MSFT 5.0". This option is not
RFC compliant.
vendor code,value
Add an encapsulated vendor option. code should be between 1 and
254 inclusive. To add a raw vendor string, omit code but keep
the comma. Examples.
Set the vendor option 01 with an IP address.
vendor 01,192.168.0.2
Set the vendor option 02 with a hex code.
vendor 02,01:02:03:04:05
Set the vendor option 03 with an IP address as a string.
vendor 03,\"192.168.0.2\"
Set un-encapsulated vendor option to hello world.
vendor ,"hello world"
vendorclassid string
Set the DHCP Vendor Class. DHCPv6 has its own option as shown
below. The default is dhcpcd-<version>:<os>:<machine>:<plat-
form>. For example
dhcpcd-5.5.6:NetBSD-6.99.5:i386:i386
If not set then none is sent. Some badly configured DHCP
servers reject unknown vendorclassids. To work around it, try
and impersonate Windows by using the MSFT vendorclassid.
vendclass en data
Add the DHCPv6 Vendor Indetifying Vendor Class with the IANA as-
signed Enterprise Number en with the data. This option can be
set more than once to add more data, but the behaviour, as per
RFC 3925 is undefined if the Enterprise Number differs.
waitip [4 | 6]
Wait for an address to be assigned before forking to the back-
ground. 4 means wait for an IPv4 address to be assigned. 6
means wait for an IPv6 address to be assigned. If no argument
is given, dhcpcd.conf will wait for any address protocol to be
assigned. It is possible to wait for more than one address pro-
tocol and dhcpcd.conf will only fork to the background when all
waiting conditions are satisfied.
xidhwaddr
Use the last four bytes of the hardware address as the DHCP xid
instead of a randomly generated number.
Defining new options
DHCP, ND and DHCPv6 allow for the use of custom options, and RFC 3925
vendor options for DHCP can also be supplied. Each option needs to be
started with the define, definend, define6 or vendopt directive. This
can optionally be followed by both embed or encap options. Both can be
specified more than once and embed must come before encap.
define code type variable
Defines the DHCP option code of type with a name of variable ex-
ported to dhcpcd-run-hooks(8).
definend code type variable
Defines the ND option code of type with a name of variable ex-
ported to dhcpcd-run-hooks(8), with a prefix of nd_.
define6 code type variable
Defines the DHCPv6 option code of type with a name of variable
exported to dhcpcd-run-hooks(8), with a prefix of dhcp6_.
vendopt code type variable
Defines the Vendor-Identifying Vendor Options. The code is the
IANA Enterprise Number which will uniquely describe the encapsu-
lated options. type is normally encap. variable names the Ven-
dor option to be exported.
embed type variable
Defines an embedded variable within the defined option. The
length is determined by the type. If the variable is not the
same as defined in the parent option, it is prefixed with the
parent variable first with an underscore. If the variable has
the name of reserved then it is not processed.
encap code type variable
Defines an encapsulated variable within the defined option. The
length is determined by the type. If the variable is not the
same as defined in the parent option, it is prefixed with the
parent variable first with an underscore.
Type prefix
These keywords come before the type itself, to describe it more fully.
You can use more than one, but they must appear in the order listed be-
low.
request Requests the option by default without having to be specified
in user configuration.
norequest
This option cannot be requested, regardless of user configura-
tion.
optional
This option is optional. Only makes sense for embedded options
like the client FQDN option, where the FQDN string itself is
optional.
index The option can appear more than once and will be indexed.
array The option data is split into a space separated array, each el-
ement being the same type.
Types to define
The type directly affects the length of data consumed inside the option.
Any remaining data is normally discarded. Lengths can be specified for
string and binhex types, but this is generally with other data embedded
afterwards in the same option.
ipaddress
An IPv4 address, 4 bytes.
ip6address
An IPv6 address, 16 bytes.
string [: length]
A NVT ASCII string of printable characters.
byte A byte.
bitflags: flags
A byte represented as a string of flags, most significant bit
first. For example, using ABCDEFGH then A would equal 10000000,
B 01000000, C 00100000, etc. If the bit is not set, the flag is
not printed. A flag of 0 is not printed even if the bit posi-
tion is set. This is to allow reservation of the first bits
while assigning the last bits.
int16 A signed 16bit integer, 2 bytes.
uint16 An unsigned 16bit integer, 2 bytes.
int32 A signed 32bit integer, 4 bytes.
uint32 An unsigned 32bit integer, 4 bytes.
flag A fixed value (1) to indicate that the option is present, 0
bytes.
domain An RFC 3397 encoded string.
dname An RFC 1035 validated string.
uri If an array then the first two bytes are the URI length inside
the option data. Otherwise, the whole option data is the URI.
As a space is not allowed in the URI encoding, the URIs are
space separated.
binhex [: length]
Binary data expressed as hexadecimal.
embed Contains embedded options (implies encap as well).
encap Contains encapsulated options (implies embed as well).
option References an option from the global definition.
Example definition
# DHCP option 81, Fully Qualified Domain Name, RFC 4702
define 81 embed fqdn
embed byte flags
embed byte rcode1
embed byte rcode2
embed domain fqdn
# DHCP option 125, Vendor Specific Information Option, RFC 3925
define 125 encap vsio
embed uint32 enterprise_number
# Options defined for the enterprise number
encap 1 ipaddress ipaddress
Supported Authentication Protocols
token Sends a plain text token the server expects and matches a token
sent by the server. The tokens do not have to be the same. If
unspecified, the token with a secretid of 0 will be used in
sending messages and validating received messages.
delayedrealm
Delayed Authentication. dhcpcd will send an authentication op-
tion with no key or MAC. The server will see this option, and
select a key for dhcpcd.conf, writing the realm and secretid in
it. dhcpcd will then look for an unexpired token with a match-
ing realm and secretid. This token is used to authenticate all
other messages.
delayed Same as above, but without a realm.
Supported Authentication Algorithms
If none specified, hmac-md5 is the default.
hmac-md5
Supported Replay Detection Mechanisms
If none specified, monotonic is the default. If this is changed from
what was previously used, or the means of calculating or storing it is
broken, then the DHCP server will probably have to have its notion of
the client's Replay Detection Value reset.
monocounter
Read the number in the file
/var/lib/dhcpcd/dhcpcd-rdm.monotonic and add one to it.
monotime
Create an NTP timestamp from the system time.
monotonic
Same as monotime.
SEE ALSO
fnmatch(3), if_nametoindex(3), dhcpcd(8), dhcpcd-run-hooks(8)
AUTHORS
Roy Marples <roy@marples.name>
BUGS
Please report them to https://roy.marples.name/projects/dhcpcd
Debian May 24, 2024 DHCPCD.CONF(5)
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