* gnu/packages/linux.scm (net-tools)[supported-systems]: Remove the Hurd.
* gnu/packages/patches/inetutils-hurd.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/admin.scm (inetutils): Use it. Disable some features on the
Hurd.
[native-inputs]: Include net-tools only on supported systems
