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nm-initrd-generatornm-initrd-generator — early boot NetworkManager configuration generator |
nm-initrd-generator scans the command line for options relevant to network configuration and creates configuration files for an early instance of NetworkManager run from the initial ramdisk during early boot.
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Output connection directory. |
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Persistent connection directory. If it exists, rd.neednet will not cause a default connection to be generated in absence of other options. |
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Output directory for initrd data (e.g. hostname). |
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The sysfs mount point. |
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Output directory for config files. |
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Dump connections to standard output. Useful for debugging. |
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The options that appear on the kernel command line. The following options are recognized:
Please consult the dracut.cmdline(7) manual for the documentation of the precise format of the values supported. |
nm-initrd-generator generates a set of connections that are then configured by the NetworkManager instance running in the initrd. There are some differences in behavior compared to the network-legacy dracut module:
When an interface is configured with a static address and a gateway, the network-legacy module waits that the gateway responds to arping requests before proceeding, while NetworkManager doesn't.
network-legacy configures interfaces one by one in the order in which they are announced by udev. If multiple interfaces specify a hostname (from command line or from DHCP), the one from the last interface activated wins. With NetworkManager, hostnames from command line have higher precedence over ones from DHCP, and the last that appears in the command line wins.
NetworkManager supports the
ib.pkey=PARENT.PKEY
argument to set up an Infiniband partition on IPoIB parent
device PARENT using the specified
partition key PKEY. The partition
key must be in hexadecimal notation without leading "0x", for
example "ib.pkey=ib0.8004".
NetworkManager supports the
rd.ethtool=INTERFACE:AUTONEG:SPEED
kernel command line option to set up ethtool NIC configuration parameters
AUTONEG and SPEED.
The INTERFACE being configured must be
specified, and the other parameters are optional and can be left blank.
When SPEED is set, duplex mode is
automatically set to 'full'. INTERFACE
accepts string values, AUTONEG accepts
boolean values (true and false / on or off / 0 or 1), and
SPEED accepts positive integer values.
NetworkManager supports the
rd.net.dhcp.dscp={CS0|CS4|CS6}
kernel command line option to set a specific DSCP (TOS) value
in the IP header of DHCP messages.