Both of these snapshots (amd64) won't get an IP from DHCP.
Build date: 1788757392 - Mon Sep  7 05:03:12 UTC 2026
Build date: 1788808322 - Mon Sep  7 19:12:02 UTC 2026

I install current snapshot by booting VM from ISO
and selecting autoinstall.  This has worked fine
until today, Sept 7th.  Not getting DHCP address.
Useing an older ISO image works.

Welcome to the OpenBSD/amd64 8.0 installation program.
(I)nstall, (U)pgrade, (A)utoinstall or (S)hell? a
No dhcp address on interface vio0 in 30 seconds.
Could not determine auto server.
Could not determine auto mode.
Response file location? !
Type 'exit' to return to install.
# dhcpleased
dhcpleased: getexecpath
#

From a working ISO image I would see, selecting (S)hell:
# dhcpleased
dhcpleased: already running
#