Issues with Linux 3.0.1 and network-interface-list

[Tassilo Horn]

Hi all,

does someone else also have issues with `network-interface-list' with
kernel version 3.0.1?  For me, sometimes that function returns nil,
although a second earlier and again a second later, it'll return a list
of eth0 and lo...

For example, with "strace -e ioctl emacs -Q" and then evaluating

--8<---------------cut here---------------start------------->8---
(while t
  (let ((ifs (network-interface-list)))
    (if ifs
      (message "Ok")
      (error "ifs"))))
--8<---------------cut here---------------end--------------->8---

in *scratch*, I first get some 100th Oks and then an error...  The
strace output is:

--8<---------------cut here---------------start------------->8---
ioctl(15, SIOCGIFCONF, {80, {{"lo", {AF_INET, inet_addr("127.0.0.1")}}, 
{"eth0", {AF_INET, inet_addr("141.26.67.142")}}}}) = 0
ioctl(15, SIOCGIFCONF, {80, {{"lo", {AF_INET, inet_addr("127.0.0.1")}}, 
{"eth0", {AF_INET, inet_addr("141.26.67.142")}}}}) = 0
ioctl(15, SIOCGIFCONF, {80, {{"lo", {AF_INET, inet_addr("127.0.0.1")}}, 
{"eth0", {AF_INET, inet_addr("141.26.67.142")}}}}) = 0
[...]
ioctl(15, SIOCGIFCONF, {0, {}})
--8<---------------cut here---------------end--------------->8---

It looks like a kernel bug, right?

(If someone can reproduce that and has some C- and kernel-fu, it would
be great if he could report that at the kernel bugtracker.  I don't have
any...)

Bye,
Tassilo