* Don't use /sys/class/net/*/operstate to find out the active interface,

since there seems to be a delay after the interface is brought up before
  operstate reflects that.

svn path=/nixu/trunk/; revision=7121

test/upstart-jobs/dhclient.nix

@@ -10,9 +10,21 @@ start on network-interfaces/started
 stop on network-interfaces/stop
 
 script
+    # Determine the interface on which to start dhclient.
     interfaces=
-    for i in $(cd /sys/class/net && ls -d *); do
+
-        if test \"$i\" != \"lo\" -a \"$(cat /sys/class/net/$i/operstate)\" != 'down'; then
+    # !!! apparent race; operstate seems to have a slight delay, so
+    # if dhclient is started right after network-interfaces, we don't
+    # always see all the interfaces.
+
+    #for i in $(cd /sys/class/net && ls -d *); do
+    #    if test \"$i\" != \"lo\" -a \"$(cat /sys/class/net/$i/operstate)\" != 'down'; then
+    #        interfaces=\"$interfaces $i\"
+    #    fi
+    #done
+
+    for i in $(ifconfig | grep '^[^ ]' | sed 's/ .*//'); do
+        if test \"$i\" != \"lo\"; then
             interfaces=\"$interfaces $i\"
         fi
     done

test/upstart-jobs/network-interfaces.nix

@@ -17,6 +17,7 @@ start script
         echo \"Bringing up network device $i...\"
         ${nettools}/sbin/ifconfig $i up || true
     done
+
 end script
 
 # Hack: Upstart doesn't yet support what we want: a service that
@@ -25,7 +26,7 @@ respawn sleep 10000
 
 stop script
     for i in $(cd /sys/class/net && ls -d *); do
-        echo \"Bringing up network device $i...\"
+        echo \"Taking down network device $i...\"
         ${nettools}/sbin/ifconfig $i down || true
     done
 end script