On Oct 8, the NetBSD Test Fixture wrote:
The newly failing test cases are:
net/carp/t_basic:carp_handover_ipv4_halt_carpdevip
net/carp/t_basic:carp_handover_ipv4_halt_nocarpdevip
net/carp/t_basic:carp_handover_ipv4_ifdown_carpdevip
net/carp/t_basic:carp_handover_ipv4_ifdown_nocarpdevip
net/carp/t_basic:carp_handover_ipv6_halt_carpdevip
net/carp/t_basic:carp_handover_ipv6_ifdown_carpdevip
These were fixed on Oct 8, but then broken again on Oct 12:
http://releng.netbsd.org/b5reports/i386/commits-2020.10.html#2020.10.12.11.07.27