Install this version:
emerge -a =dev-perl/IO-Socket-Multicast-1.120.0
If this version is masked, you can unmask it using the autounmask tool or standard emerge options:
autounmask =dev-perl/IO-Socket-Multicast-1.120.0
Or alternatively:
emerge --autounmask-write -a =dev-perl/IO-Socket-Multicast-1.120.0
# Copyright 1999-2021 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI=8
DIST_AUTHOR=BRAMBLE
DIST_VERSION=1.12
inherit perl-module
DESCRIPTION="Send and receive multicast messages"
SLOT="0"
KEYWORDS="~amd64 ~x86"
RDEPEND="
>=dev-perl/IO-Interface-0.940.0
"
BDEPEND="${RDEPEND}
virtual/perl-ExtUtils-MakeMaker
"
>=dev-perl/IO-Interface-0.940.0
>=dev-perl/IO-Interface-0.940.0 virtual/perl-ExtUtils-MakeMaker