The following packages have unmet dependencies:
gns3-server:i386 : Depends: qemu-system-x86:i386
Depends: qemu-system-arm:i386
Depends: qemu-kvm:i386
Depends: xvfb:i386
Depends: libvirt-bin:i386 but it is not going to be installed or
libvirt-daemon-system:i386 but it is not going to be installed
gsettings-desktop-schemas : Depends: dconf-gsettings-backend but it is not going to be installed or
gsettings-backend
libavahi-ui-gtk3-0:i386 : Depends: libgdbm6:i386 (>= 1.16) but it is not installable
libbz2-1.0 : Depends: libc6 (>= 2.4) but it is not installable
libcrypt1 : Depends: libc6 (>= 2.25) but it is not installable
libdb5.3 : Depends: libc6 (>= 2.17) but it is not installable
libgdbm-compat4 : Depends: libc6 (>= 2.14) but it is not installable
libgdbm6 : Depends: libc6 (>= 2.14) but it is not installable
libgtk-3-common : Depends: dconf-gsettings-backend but it is not going to be installed or
gsettings-backend
Recommends: libgtk-3-0 but it is not going to be installed
libperl5.32 : Depends: libc6 (>= 2.29) but it is not installable
perl-base : PreDepends: libc6 (>= 2.29) but it is not installable
zlib1g : Depends: libc6 (>= 2.14) but it is not installable
E: Unable to correct problems, you have held broken packages.
that is right but there were lots of people which con install gns3 on their kali distribution.
as well as believe it, that is a big challenge so we have to put to gather to solve it, this would be the meaning of community.