Gentoo Archives: gentoo-user

From: Bruce Hill <daddy@×××××××××××××××××××××.com>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] Browsers cannot access WWW while ping and host utilities work as expected.
Date: Mon, 05 Aug 2013 14:41:22
Message-Id: 20130805144109.GM25510@server
In Reply to: Re: [gentoo-user] Browsers cannot access WWW while ping and host utilities work as expected. by Marc Joliet
1 On Mon, Aug 05, 2013 at 04:31:44PM +0200, Marc Joliet wrote:
2 > Am Mon, 5 Aug 2013 07:59:09 -0500
3 > schrieb Bruce Hill <daddy@×××××××××××××××××××××.com>:
4 >
5 > > If this is "the new kernel naming scheme of NICs", why this in dmesg:
6 > >
7 > > [ 4.725902] systemd-udevd[1176]: renamed network interface wlan0 to enp0s18f2u2
8 > >
9 > > It looks as if systemd-udev renamed the NIC to me. Can you explain?
10 >
11 > It already has been explained in the previous NIC renaming discussion: what's
12 > broken is renaming a device within the kernels internal namespace, which
13 > contains eth*, wlan* (and maybe others). The problem is that there is a race
14 > condition with the kernel when renaming ethX to ethY. What you *can* do is
15 > rename ethX to somethingelseX or somethingelseY, because then you are not racing
16 > against the kernel to hand out device names.
17 >
18 > This is explained on the website that also explains the new default renaming
19 > scheme used by udev. I (and IIRC others, too) already linked to it in in the old
20 > thread, and the relevant news item also referenced it, but here it is again:
21 >
22 > http://www.freedesktop.org/wiki/Software/systemd/PredictableNetworkInterfaceNames/
23
24 The fact is that udev renamed the NIC. For the average Joe with one NIC (very
25 large percentage of users) this is a non sequitur. For those of us with 2 or
26 more NICs, myself included, we have already setup our systems to use multiple
27 NICs for a purpose and configured the system so that nothing can/will/needs to
28 rename subsequent NICs.
29
30 My point is don't say "the new kernel naming scheme of NICs", say "the new
31 systemd naming scheme of NICs".
32 --
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39
40 A: Because it messes up the order in which people normally read text.
41 Q: Why is top-posting such a bad thing?
42 A: Top-posting.
43 Q: What is the most annoying thing in e-mail?
44
45 Don't top-post: http://en.wikipedia.org/wiki/Top_post#Top-posting

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