commit 4d180be5175e176ec27680557c1d67536a847610
author Michael Brown <mcb30@ipxe.org> Tue Jul 20 13:19:15 2021 +0100
committer Michael Brown <mcb30@ipxe.org> Tue Jul 20 13:19:15 2021 +0100
tree 12cb4eb72fb08db15007930fbdd8f9145f995a12
parent c64dfff0a93b5f967ae21339313e61baf0b7a3a0

[cloud] Retry DHCP aggressively in AWS EC2

The DHCP service in EC2 has been observed to occasionally stop
responding for bursts of several seconds.  This can easily result in a
failed boot, since the current cloud boot script will attempt DHCP
only once.

Work around this problem by retrying DHCP in a fairly tight cycle
within the cloud boot script, and falling back to a reboot after
several failed DHCP attempts.

Signed-off-by: Michael Brown <mcb30@ipxe.org>