NETWORKD.CONF(5) networkd.conf NETWORKD.CONF(5) NAME networkd.conf, networkd.conf.d - SYNOPSIS /etc/systemd/networkd.conf /etc/systemd/networkd.conf.d/*.conf /usr/lib/systemd/networkd.conf.d/*.conf DUID(DHCP Unique Identifier) /etc/systemd/ /usr/lib/systemd/*.conf.d/ /etc/ *.conf.d/ *.conf.d/ () () *.conf.d/ /usr/lib/ /etc/ /dev/null /usr/lib/ [DHCP] DUID(DHCP Unique Identifier) DHCPv6 IPv6 DHCPv6 DUID(DHCP Unique Identifier) IAID(Identity Association Identifier) ClientIdentifier=duid DHCPv4 IPv4 DHCPv4 DUID(DHCP Unique Identifier) IAID(Identity Association Identifier) DHCP DUID IAID systemd.network(5) DUIDType= DUID RFC 3315[1] vendor "DUIDType=vendor" "43793"(systemd)"vendor identifier" machine-id(5) DUID link-layer-time, link-layer, uuid DUID type DUID DUIDRawData= DUIDRawData= DUID DUIDRawData= Specifies the DHCP DUID value as a single newline-terminated, hexadecimal string, with each byte separated by ":". The DUID that is sent is composed of the DUID type specified by DUIDType= and the value configured here. The DUID value specified here overrides the DUID that systemd-networkd generates using the machine-id from the /etc/machine-id file. To configure DUID per-network, see systemd.network (5). The configured DHCP DUID should conform to the specification in RFC 3315[2], RFC 6355[3]. To configure IAID, see systemd.network(5). Example 1. A DUIDType=vendor with a custom value DUIDType=vendor DUIDRawData=00:00:ab:11:f9:2a:c2:77:29:f9:5c:00 This specifies a 14 byte DUID, with the type DUID-EN ("00:02"), enterprise number 43793 ("00:00:ab:11"), and identifier value "f9:2a:c2:77:29:f9:5c:00". systemd(1), systemd.network(5), machine-id(1) NOTES 1. RFC 3315 https://tools.ietf.org/html/rfc3315#section-9 2. RFC 3315 http://tools.ietf.org/html/rfc3315#section-9 3. RFC 6355 http://tools.ietf.org/html/rfc6355 man http://www.jinbuguo.com man https://github.com/man-pages-zh/manpages- zh systemd 231 NETWORKD.CONF(5)