install/60134: 11.0_RC2 installer adds duplicate dhcpcd/dhcpcd_flags lines to /etc/rc.conf

["jmcneill%invisible.ca@localhost via gnats" <gnats-admin%NetBSD.org@localhost>]

>Number:         60134
>Category:       install
>Synopsis:       11.0_RC2 installer adds duplicate dhcpcd/dhcpcd_flags lines to /etc/rc.conf
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    install-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Mar 26 10:15:00 +0000 2026
>Originator:     Jared McNeill
>Release:        netbsd-11/20260308105915Z
>Organization:
>Environment:
amd64 daily build netbsd-11/20260308105915Z
>Description:
After installing 11.0_RC2 on amd64, I found that /etc/rc.conf had the dhcpcd and dhcpcd_flags options written twice:

# Add local overrides below.
#
dhcpcd=YES
dhcpcd_flags="-qM wm0"
hostname=foo
dhcpcd=YES
dhcpcd_flags="-qM wm0"
sshd=YES
mdnsd=YES
wscons=YES
>How-To-Repeat:
I didn't try to reproduce it. Installed from ISO in a VM with two network interfaces. Only configured one during installation.
>Fix:
Unknown