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Date:	Mon, 30 Jun 2014 17:36:36 -0300
From:	Thadeu Lima de Souza Cascardo <>
	Thadeu Lima de Souza Cascardo <>
Subject: [PATCH] Use dev_port for the ID of a network device.

For network devices on the same PCI function, dev_id should not be used,
since its purpose is for IPv6 support on interfaces with the same MAC

The new dev_port sysfs attribute should be used when it is found. When
it is not, using dev_id might work.

Signed-off-by: Thadeu Lima de Souza Cascardo <>
 src/udev/udev-builtin-net_id.c |    9 +++++++--
 1 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/udev/udev-builtin-net_id.c b/src/udev/udev-builtin-net_id.c
index c80c30a..6de9c98 100644
--- a/src/udev/udev-builtin-net_id.c
+++ b/src/udev/udev-builtin-net_id.c
@@ -186,9 +186,14 @@ static int dev_pci_slot(struct udev_device *dev, struct netnames *names) {
                 return -ENOENT;
         /* kernel provided multi-device index */
-        attr = udev_device_get_sysattr_value(dev, "dev_id");
-        if (attr)
+        attr = udev_device_get_sysattr_value(dev, "dev_port");
+        if (attr) {
                 dev_id = strtol(attr, NULL, 16);
+        } else {
+                attr = udev_device_get_sysattr_value(dev, "dev_id");
+                if (attr)
+                        dev_id = strtol(attr, NULL, 16);
+        }
         /* compose a name based on the raw kernel's PCI bus, slot numbers */
         s = names->pci_path;

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