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/etc/dhcpy6d.conf
dhcpy6d8
Mac address aware dhcpv6 server
Usage
dhcpy6d [-c
file]
[-u
user]
[-g
group]
[-p
prefix]
[{-r
yes | no}]
[-d
duid]
[-m
message]
[-G]
Overview
dhcpy6d is an open source server for DHCPv6, the DHCP protocol for IPv6.
Its development is driven by the need to be able to use the existing IPv4 infrastructure in coexistence with IPv6. In a dualstack scenario, the existing DHCPv4 most probably uses MAC addresses of clients to identify them. This is not intended by RFC 3315 for DHCPv6, but also not forbidden. Dhcpy6d is able to do so in local network segments and therefore offers a pragmatical method for parallel use of DHCPv4 and DHCPv6, because existing client management solutions could be used further.
dhcpy6d comes with the following features:
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identifies clients by MAC address, DUID or hostname
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generates addresses randomly, by MAC address, by range, by given ID or from DNS name
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filters clients by MAC, DUID or hostname
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assigns multiple addresses per client
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allows one to organize clients in different classes
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stores leases in MySQL, PostgreSQL or SQLite database
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client information can be retrieved from MySQL or PostgreSQL database or textfile
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dynamically updates DNS (Bind)
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supports rapid commit
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listens on multiple interfaces
Options
Most configuration is done via the configuration file.
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-c, --config=<configfile> -
Set the configuration file to use. Default is /etc/dhcpy6d.conf.
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-u, --user=<user> -
Set the unprivileged user to be used.
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-g, --group=<group> -
Set the unprivileged group to be used.
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-r, --really-do-it=<yes|no> -
Really activate the DHCPv6 server. This is a precaution to prevent larger network trouble.
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-d, --duid=<duid> -
Set the DUID for the server. This argument is used by /etc/init.d/dhcpy6d and /lib/systemd/system/dhcpy6d.service respectively.
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-p, --prefix=<prefix> -
Set the prefix which will be substituted for the $prefix$ variable in address definitions. Useful for setups where the ISP uses a changing prefix.
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-G, --generate-duid -
Generate DUID to be used in config file. This argument is used to generate a DUID for /etc/default/dhcpy6d. After generation dhcpy6d exits.
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-m, --message <message> -
Send message to running dhcpy6d server. At the moment the only valid message is "prefix <prefix>". The value of <prefix> will be used instantly where $prefix$ is to be replaced as placeholder in address definitions. This might be of use for dynamic prefixes by ISPs, for example: dhcpy6d -m "prefix 2001:db8".
Files
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/etc/dhcpy6d-clients.conf
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/var/lib/dhcpy6d/
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/var/log/dhcpy6d.log
Releases
6 releases since Debian 8 (Jessie); the text changed 2 times.
--message since Debian 11 (Bullseye);
--prefix since Debian 11 (Bullseye);
-m since Debian 11 (Bullseye);
-p since Debian 11 (Bullseye).