On Mon, 7 Jan 2013 10:58:20 -0500 Dave Reisner <d@xxxxxxxxxxxxxx> wrote: > On Mon, Jan 07, 2013 at 09:35:45AM -0600, Leonid Isaev wrote: > > On Mon, 07 Jan 2013 08:23:10 +0100 > > Andrea Scarpino <andrea@xxxxxxxxxxxxx> wrote: > > > > > On Monday 07 January 2013 07:51:30 Allan McRae wrote: > > > > Upstream decision... vanilla packages should follow it. > > > > > > I agree with Allan. We don't use to change the default behavior. Ship it > > > as default and add two lines on how to disable it. > > > > > > > If I may chime in... regarding switching from MAC-based iface naming to > > ID_NET_NAME_PATH-based naming. How exactly are these ID_NET_NAME_PATH > > variables assigned? > > > > For instance, I have a box with 2 pci intel cards: > > 1. DEVPATH=/devices/pci0000:00/0000:00:05.0/0000:02:00.0/net/elan0 > > ID_NET_NAME_PATH=enp2s0f0 > > 2. DEVPATH=/devices/pci0000:00/0000:00:06.0/0000:03:00.0/net/elan1 > > ID_NET_NAME_PATH=enp3s0f0 > > > > Do I correctly understand that "enp?s0f0" is chosen based on a particular > > pci slot the card is inserted in and will change if I choose to replug the > > cards? > > Yes, it's derived from the PCI path of the card in this case, and yes > it'll change if you physically move the card. There's some examples of > composed paths in udev source: > > http://cgit.freedesktop.org/systemd/systemd/tree/src/udev/udev-builtin-net_id.c#n21 Thanks for the clarification. > > If this is a concern to you, ID_NET_NAME_MAC is also available, which > will always be the MAC from the hardware and should never be any > possible faked address from the OS side. Ah... that's cool. I didn't know one can't fake ID_NET_NAME_MAC. > > $ macchanger -m 12:34:56:78:90:ab eth0 > Current MAC: de:ad:be:ef:00:01 (unknown) > Faked MAC: 12:34:56:78:90:ab (unknown) > > $ udevadm info -q property /sys/class/net/eth0 | grep ID_NET_NAME_MAC > ID_NET_NAME_MAC=enxdeadbeef01 > > d -- Leonid Isaev GnuPG key: 0x164B5A6D Fingerprint: C0DF 20D0 C075 C3F1 E1BE 775A A7AE F6CB 164B 5A6D
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