Comment 7 for bug 1621507

WRT regression potential:

 2) In at least some cases, DHCP network configuration shifts from klibc's ipconfig to isc-dhcp-client's dhclient. This should be of minimal risk, as isc-dhcp-client is in very very widespread use. In the event of a regression, network boot would fail, but the prior kernel should still be bootable.

It is in widespread use; and the set of functionality used by ipconfig in the initramfs is very small, so unlikely to run into any problems as a result of behavior differences between ipconfig and dhclient.

However, the risk is non-zero, and I consider it acceptable to change the dhcpv4 client from ipconfig to dhclient in SRU solely because we should also plan to solve 1) in the longer term, which is only possible by removing klibc-utils completely from the initramfs. Were this not the case, the preferred safer path would be to continue using ipconfig for ipv4 and use dhclient only for ipv6.