https://forum.proxmox.com/threads/ipxe-boot-kvm-ubuntu-18-usg-hangs-after-pxelinux-0.60298/
[SOLVED] - iPXE Boot, KVM, Ubuntu 18, USG - Hangs after pxelinux.0 | Proxmox Support Forum
Hello, I have a new VLAN 8. This network supports network boot and tftp settings. Requests that are network booted from a KVM host that is tagged on VLAN 8...
https://artfiles.org/debian/dists/sid/main/installer-i386/current/images/netboot/gtk/pxelinux.cfg/
Index of /debian/dists/sid/main/installer-i386/current/images/netboot/gtk/pxelinux.cfg
https://lists.centos.org/hyperkitty/list/discuss@lists.centos.org/thread/T62FOGZFS6ZGBWHA6FU2HZFC6QBC5DJS/?sort=thread
Booting OpenBSD with pxelinux - Discuss - lists.centos.org
bootingopenbsddiscusslistscentos
https://www.mail-archive.com/qemu-devel@nongnu.org/msg1125869.html
[PATCH 5/5] tests/functional: Add a test for s390x pxelinux.cfg network booting