diskimage-builder/diskimage_builder/elements/dhcp-all-interfaces/README.rst
Lenny Verkhovsky f249cec9f3 Checking link status according to DIB_DHCP_TIMEOUT
In slow networks like Infiniband it takes much time for the
interface to get the carrier. This patch enables this service
to run more then 20 seconds and limited by DIB_DHCP_TIMEOUT.

Change-Id: I8a6015567ac25e37b5a5aba4b1fda71170cc144a
2018-02-21 12:52:57 +00:00

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dhcp-all-interfaces
===================
Autodetect network interfaces during boot and configure them for DHCP
The rationale for this is that we are likely to require multiple
network interfaces for use cases such as baremetal and there is no way
to know ahead of time which one is which, so we will simply run a
DHCP client on all interfaces with real MAC addresses (except lo) that
are visible on the first boot.
On non-Gentoo based distributions the script
/usr/local/sbin/dhcp-all-interfaces.sh will be called early in each
boot and will scan available network interfaces and ensure they are
configured properly before networking services are started.
On Gentoo based distributions we will install the dhcpcd package and
ensure the service starts at boot. This service automatically sets
up all interfaces found via dhcp and/or dhcpv6 (or SLAAC).
Environment Variables
---------------------
DIB_DHCP_TIMEOUT
:Required: No
:Default: 30
:Description: Amount of time in seconds that the systemd service will
wait to get an address. Should be increased in networks such as Infiniband.
:Example: DIB_DHCP_TIMEOUT=300