16aa4494d7
Kernel support for dumping the multicast querier state was added in this commit [1]. As some people might be interested to get this information from userspace, this commit implements the necessary changes to show it via ip -d link show [dev] The querier state shows the following information for IPv4 and IPv6 respectively: 1) The ip address of the current querier in the network. This could be ourselves or an external querier. 2) The port on which the querier was seen 3) Querier timeout in seconds [1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c7fa1d9b1fb179375e889ff076a1566ecc997bfc Signed-off-by: Fabian Pfitzner <f.pfitzner@pengutronix.de> Acked-by: Nikolay Aleksandrov <razor@blackwall.org> Acked-by: Nikolay Aleksandrov <razor@blackwall.org> Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
This is a set of utilities for Linux networking.
Information:
https://wiki.linuxfoundation.org/networking/iproute2
Download:
http://www.kernel.org/pub/linux/utils/net/iproute2/
Stable version repository:
git://git.kernel.org/pub/scm/network/iproute2/iproute2.git
Development repository:
git://git.kernel.org/pub/scm/network/iproute2/iproute2-next.git
Compatibility
-------------
A new release of iproute2 is done with each kernel version, but
there is a wide range of compatibility. Newer versions of iproute2
will still work with older kernels, but there are some limitations.
If an iproute2 command with a new feature is used with an older
kernel, the kernel may report an error or silently ignore the new
attribute. Likewise if older iproute2 is used with an newer kernel,
it is not possible to use or see new features. The range of
compatibility extends back as far as the oldest supported Long Term
Support (LTS) kernel version.
How to compile this.
--------------------
1. libdbm
arpd needs to have the berkeleydb development libraries. For Debian
users this is the package with a name like libdbX.X-dev.
DBM_INCLUDE points to the directory with db_185.h which
is the include file used by arpd to get to the old format Berkeley
database routines. Often this is in the db-devel package.
2. make
The makefile will automatically build a config.mk file which
contains definitions of libraries that may or may not be available
on the system such as: ATM, ELF, MNL, and SELINUX.
3. include/uapi
This package includes matching sanitized kernel headers because
the build environment may not have up to date versions. See Makefile
if you have special requirements and need to point at different
kernel include files.
Stephen Hemminger
stephen@networkplumber.org
David Ahern
dsahern@gmail.com