Fixups for iPXE boot

initrd/sbin/network-fetch-boot-assets.sh

@@ -15,26 +15,34 @@ for par in $(cat /proc/cmdline); do
     esac
 done
 
-IFACE=
-for i in /sys/class/net/*; do
-    i="${i##*/}"
-    [ "$i" = "lo" ] && continue
-    ip link set "$i" up 2>/dev/null || true
-    if [ -r "/sys/class/net/$i/carrier" ] && [ "$(cat "/sys/class/net/$i/carrier" 2>/dev/null)" = "1" ]; then
-        IFACE="$i"
-        break
-    fi
+for I in `seq 1 10`; do
+    IFACE=
+    for i in /sys/class/net/*; do
+        i="${i##*/}"
+        [ "$i" = "lo" ] && continue
+        ip link set "$i" up 2>/dev/null || true
+        if [ -r "/sys/class/net/$i/carrier" ] && [ "$(cat "/sys/class/net/$i/carrier" 2>/dev/null)" = "1" ]; then
+            IFACE="$i"
+            break
+        fi
+    done
+    echo "No connected NIC"
+    echo "Retrying ..."
+    sleep 3
 done
 
-if [ -n "$IFACE" ]; then
-    echo "[initrd] Found interface: $IFACE"
-    ip link set "$IFACE" up 2>/dev/null || true
+for I in `seq 1 10`; do
+    if [ -n "$IFACE" ]; then
+        echo "[initrd] Found interface: $IFACE"
+        ip link set "$IFACE" up 2>/dev/null || true
 
-    echo "[initrd] DHCP on $IFACE..."
-    udhcpc -i "$IFACE" -q -t 10 -T 2 -s /sbin/udhcpc.script || echo "[initrd] DHCP failed"
-else
-    echo "[initrd] No connected NIC interface found."
-fi
+        echo "[initrd] DHCP on $IFACE..."
+        udhcpc -i "$IFACE" -q -t 10 -T 2 -s /sbin/udhcpc.script && break || echo "[initrd] DHCP failed"
+    else
+        echo "Retrying ..."
+        sleep 3
+    fi
+done
 
 if [ -n "$ISOURL" ]; then
     echo "[initrd] Fetching ISO from $ISOURL"