On Tue, Aug 12, 2014 at 02:45:25AM +0200, Cyril Brulebois wrote: > That I don't know. Maybe try and compare with netcfg + dhcp client du > jour on Linux, and see whether netcfg's behaviour is different in both > cases, or the dhcp client's one, or the kernel's one. In the end there's a lot of sadness around what we do, what Ubuntu does, and what the end result is. Ubuntu uses isc-dhcp-client, so the same as on kfreebsd-* and might as well have some additional patches to netcfg because of this. But at work we do use Ubuntu and found that dhclient is called with -1. If the lease expires during installation and your switch does DHCP snooping, you lose network during installation because the DHCP client does not continue to renew it. This is anecdotal experience but divergence between Linux and kfreebsd wrt DHCP might mean that certain problems need to be solved twice or certain failure modes only happen in one or another, with userspace being the reason, not even the kernel difference. Kind regards Philipp Kern
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