1 files changed, 32 insertions, 0 deletions
diff --git a/modules.d/40network/ifname-genrules.sh b/modules.d/40network/ifname-genrules.sh
new file mode 100755
index 0000000..b9b95c4
--- /dev/null
+++ b/modules.d/40network/ifname-genrules.sh
@@ -0,0 +1,32 @@
+#!/bin/sh
+
+# if there are no ifname parameters, just use NAME=KERNEL
+if ! getarg ifname= > /dev/null; then
+    return
+fi
+
+command -v parse_ifname_opts > /dev/null || . /lib/net-lib.sh
+
+{
+    for p in $(getargs ifname=); do
+        parse_ifname_opts "$p"
+
+        if [ -f /tmp/ifname-"$ifname_mac" ]; then
+            read -r oldif < /tmp/ifname-"$ifname_mac"
+        fi
+        if [ -f /tmp/ifname-"$ifname_if" ]; then
+            read -r oldmac < /tmp/ifname-"$ifname_if"
+        fi
+        if [ -n "$oldif" -a -n "$oldmac" -a "$oldif" = "$ifname_if" -a "$oldmac" = "$ifname_mac" ]; then
+            # skip same ifname= declaration
+            continue
+        fi
+
+        [ -n "$oldif" ] && warn "Multiple interface names specified for MAC $ifname_mac: $oldif"
+        [ -n "$oldmac" ] && warn "Multiple MAC specified for $ifname_if: $oldmac"
+
+        printf 'SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="%s", ATTR{type}=="1", NAME="%s"\n' "$ifname_mac" "$ifname_if"
+        echo "$ifname_if" > /tmp/ifname-"$ifname_mac"
+        echo "$ifname_mac" > /tmp/ifname-"$ifname_if"
+    done
+} >> /etc/udev/rules.d/80-ifname.rules