--- write_net_rules.orig	2018-04-05 22:57:00.000000000 +0400
+++ write_net_rules	2019-08-18 14:08:46.057054843 +0400
@@ -1,4 +1,4 @@
-#!/bin/sh -e
+#!/bin/bash -e
 
 # This script is run to create persistent network device naming rules
 # based on properties of the device.
@@ -42,6 +42,8 @@
 
 . /lib/udev/rule_generator.functions
 
+[ -f /etc/sysconfig/write_net_rules] && . /etc/sysconfig/write_net_rules
+
 interface_name_taken() {
         local value="$(find_all_rules 'NAME=' $INTERFACE)"
         if [ "$value" ]; then
@@ -117,6 +119,20 @@
 basename=${INTERFACE%%[0-9]*}
 match="$match, KERNEL==\"$basename*\""
 
+ETHERDEFAULT=${ETHERDEFAULT:-ether}
+
+if [ "$ETHERDEFAULT" != "eth" ]; then
+    if [ "$basename" = "eth" ]; then
+        basename="$ETHERDEFAULT"
+    fi
+    if [[ $INTERFACE_NAME =~ (eth)([0-9]+) ]]; then
+        INTERFACE_NAME="$ETHERDEFAULT${BASH_REMATCH[2]}"
+    fi
+    if [[ $INTERFACE =~ (eth)([0-9]+) ]]; then
+        INTERFACE="$ETHERDEFAULT${BASH_REMATCH[2]}"
+    fi
+fi
+
 if [ "$INTERFACE_NAME" ]; then
         # external tools may request a custom name
         COMMENT="$COMMENT (custom name provided by external tool)"