Add support for custom protocols from rt_protos.d

[Nicolas Dichtel]

FRR puts its own proto numbers when inserting a route, example:
$ ip route
[snip]
2.2.2.0/24 via 3.3.3.2 dev eth2 proto 188 metric 20

iproute2 defines some protocols, but not all:
https://git.kernel.org/pub/scm/network/iproute2/iproute2.git/tree/etc/iproute2/rt_protos

A patch has been pushed upstream so that external applications can define their protocols numbers:
719e331ff619 ("Add support for rt_protos.d")
https://git.kernel.org/pub/scm/network/iproute2/iproute2.git/commit/?id=719e331ff619

[Ubuntu Foundations Team Bug Bot (crichton)]

The attachment "proposed-patch-1.debdiff" seems to be a debdiff. The ubuntu-sponsors team has been subscribed to the bug report so that they can review and hopefully sponsor the debdiff. If the attachment isn't a patch, please remove the "patch" flag from the attachment, remove the "patch" tag, and if you are member of the ~ubuntu-sponsors, unsubscribe the team.

[This is an automated message performed by a Launchpad user owned by ~brian-murray, for any issue please contact him.]

[Khaled El Mously (kmously)]

Proposed fix for lp #1771764 and lp #1771783

Please ignore the first proposal.

[Nicolas Dichtel (nicolas-dichtel)]

It works on my side:

$ ./ip/ip r a 2.2.2.0/24 via 10.0.2.123 dev mgmt0 proto 188 metric 20
$ ./ip/ip r | grep 2.2.2
2.2.2.0/24 via 10.0.2.123 dev mgmt0 proto 188 metric 20
$ mkdir -p /etc/iproute2/rt_protos.d
$ echo "188 foo" > /etc/iproute2/rt_protos.d/bar.conf
$ ./ip/ip r | grep 2.2.2
2.2.2.0/24 via 10.0.2.123 dev mgmt0 proto foo metric 20

[Simon Quigley (tsimonq2)]

Hello! Thank you for your contribution to Ubuntu.

If you would like this to be sponsored to Xenial, please edit the bug description to follow the SRU bug template. More information can be found here: https://wiki.ubuntu.com/StableReleaseUpdates#SRU_Bug_Template

Additionally, I see in your debdiff there are multiple areas which still need to be filled in, or removed. Such lines include:
+## Description: add some description
+## Origin/Author: add some origin or author
+## Bug: bug URL

I recommend you read the DEP-3 standard, which provides a standard way to fill out such a description: https://dep-team.pages.debian.net/deps/dep3/

I am unsubscribing the Ubuntu Sponsors Team for now, please resubscribe us when the changes have been made.

Thank you!