Patch to OpenRC iproute2.sh to support abstract interfaces

0001-Add-abstract-create_-config-option-to-create-arbitar.patch

From c6802bcf9f23007e573f2655e9d57c177e1279b5 Mon Sep 17 00:00:00 2001
From: Joseph Glanville <joseph.glanville@orionvm.com.au>
Date: Sun, 20 May 2012 16:30:11 +0000
Subject: [PATCH] Add abstract create_ config option to create arbitary interfaces.

This patch allows the creation of any interface supported by the
underlying NETLINK interface of iproute2.

To create an interface simply supply a create_${iface} line in
your /etc/conf.d/net file.

Example:
Create a gretap tunnel
create_vpn0="type gretap local 192.168.0.1 remote 49.156.78.82 key 12345 ttl 5"
---
 net/iproute2.sh |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/net/iproute2.sh b/net/iproute2.sh
index 16186e8..0af59e6 100644
--- a/net/iproute2.sh
+++ b/net/iproute2.sh
@@ -270,6 +270,14 @@ iproute2_pre_start()
                eend $? || return 1
                _up
        fi
+       local create=
+       eval create=\$create_${IFVAR}
+       if [ -n "${create}" ]; then
+               ebegin "Creating interface ${IFVAR}"
+               ip link add "${IFACE}" ${create}
+               eend $? || return 1
+               _up
+       fi

        # MTU support
        local mtu=
--
1.7.3.4