On Sun, May 08, 2022 at 11:24:12AM -0400, Michael Stone wrote: > [apologies to package aliases getting this twice due to autocomplete fail]
> I've been trying to make sense of the NEWS item in isc-dhcp-client (that > alternatives are needed) in combination with the functionality of ifupdown > and what the implications are for debian upgrades generally. > isc-dhcp-client as of the last upgrade is telling users to stop using it > (the default dhcp client for debian). > ifupdown (the traditional tool for managing networking on debian systems) > has a Recommends on "isc-dhcp-client | dhcp-client". "dhcp-client" is a > virtual package provided by "dhcpcanon" (version 0.8.5, which hasn't been > touched in 4 years), "isc-dhcp-client", and "dhcpcd5" (which will trash a > working configuration managed by ifupdown if installed, as it will try to > take over interfaces currently set, e.g., to manual). This seems suboptimal > at best. > I believe that ifupdown will attempt to use udhcpd if installed, which > should be a mostly-transparent change (except for the potential loss of > lease information and any customization of dhclient scripts) but it isn't > even on the ifupdown recommends list. > ifupdown also (used to?) use pump, but that package went away a long time > ago. > So what's the path forward, maintaining compatibility and not breaking > systems upgrading from current stable? Do we come up with a dhcpcd5 variant > that *only* touches interfaces it is directed to touch via > /etc/network/interfaces? Do we add udhcpcd to the "dhcp-client" virtual > package and/or make it the default for ifupdown? Do we fork isc's dhcp suite > and just continue to use dhclient? Revive pump? Something else? Not an answer to your question, but a related issue I'll mention here. Ubuntu no longer uses isc-dhcp by default, because it no longer uses ifupdown; NetworkManager and networkd both have their own implementations of dhcp clients which are used by preference. *However*, isc-dhcp is still installed as part of all Ubuntu systems, because it is the only client implementation that integrates with initramfs-tools (/usr/share/initramfs-tools/hooks/zz-dhclient) so if you are using nfsroot or any other network-based rootfs, it appears to still be the only game in town. It would be a good idea to make sure as part of the deprecation of isc-dhcp-client that we get initramfs integration of whatever is the preferred replacement. -- Steve Langasek Give me a lever long enough and a Free OS Debian Developer to set it on, and I can move the world. Ubuntu Developer https://www.debian.org/ slanga...@ubuntu.com vor...@debian.org
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