Some network devices have an awful habit of creating interfaces when loaded,
despite not asked for. Worse even, they do so while being autoloaded due to an
attempt to create a device via netlink:

  # rmmod dummy
  # ip link add dummy0 type dummy
  RTNETLINK answers: File exists

The kernel maintainers seem opposed to fixing this in kernel (despite a similar
thing has been done with loop block devices) [1]. Let's fix this my overriding the
defaults from userspace.

[1] http://comments.gmane.org/gmane.linux.kernel/2124714
---
This seems to have slipped through the cracks.

 Makefile.am                |  4 ++++
 modprobe.d/50-default.conf | 24 ++++++++++++++++++++++++
 2 files changed, 28 insertions(+)
 create mode 100644 modprobe.d/50-default.conf

diff --git a/Makefile.am b/Makefile.am
index 2a1eb50..b114db8 100644
--- a/Makefile.am
+++ b/Makefile.am

@@ -105,6 +105,10 @@ bashcompletiondir=@bashcompletiondir@
 dist_bashcompletion_DATA = \
        shell-completion/bash/kmod

+modprobeddir=$(prefix)/lib/modprobe.d
+dist_modprobed_DATA = \
+       modprobe.d/50-default.conf
+
 install-exec-hook:
        if test "$(libdir)" != "$(rootlibdir)"; then \
                $(MKDIR_P) $(DESTDIR)$(rootlibdir) && \

diff --git a/modprobe.d/50-default.conf b/modprobe.d/50-default.conf
new file mode 100644
index 0000000..70d21f2
--- /dev/null
+++ b/modprobe.d/50-default.conf

@@ -0,0 +1,24 @@
+# default module parameters
+#
+# This file is part of kmod.
+#
+# Copyright 2016 Lubomir Rintel
+#
+# This program is free software; you can redistribute it and/or modify it
+# under the terms of the GNU Lesser General Public License as published by
+# the Free Software Foundation; either version 2.1 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with this program; if not, see <http://www.gnu.org/licenses/>.
+
+# See modprobe.d(5) for the description of the files in this directory,
+
+options bonding max_bonds=0
+options dummy numdummies=0
+options ifb numifbs=0
--

2.13.5

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