From https://github.com/rootless-containers/slirp4netns/blob/4889f5299f407d7d7566c76a3b8b5f71c99b6db5/qemu_patches/0003-slirp-add-disable_host_loopback-prohibit-connections.patch

Original commits:
* https://github.com/rootless-containers/slirp4netns/commit/6325473781bb344c225f54e2d28800fb0619d7ee
* https://github.com/rootless-containers/slirp4netns/commit/13b24026867d4c30d5d1465ac82e3bb890bf4caa



Signed-off-by: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>