Fixed potential race condition for filter application in case dhcp no…

…t available at boot

CHANGELOG.md

@@ -3,6 +3,13 @@
 All notable changes to this project will be documented in this file. The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/), and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ---
+# [0.4.6] - 2023-08-13
+
+###
+
+- Fixed potential race condition if upstream DHCP server is not functioning when FW inits ebpf.
+  Changed address family match to ethernet when applying TC Filters/Diag settings.
+
 # [0.4.5] - 2023-08-03
 
 ###

src/zfw.c

@@ -147,7 +147,7 @@ char *monitor_interface;
 char *tc_interface;
 char *object_file;
 char *direction_string;
-const char *argp_program_version = "0.4.5";
+const char *argp_program_version = "0.4.6";
 struct ring_buffer *ring_buffer;
 
 __u8 if_list[MAX_IF_LIST_ENTRIES];
@@ -1017,7 +1017,9 @@ void interface_tc()
      */
     while (address)
     {
-        if (address->ifa_addr && (address->ifa_addr->sa_family == AF_INET))
+        if(address->ifa_addr && ((!strncmp(address->ifa_name, "ziti0", 4) && (address->ifa_addr->sa_family == AF_INET))
+          || (!strncmp(address->ifa_name, "tun", 3) && (address->ifa_addr->sa_family == AF_INET))
+           || (address->ifa_addr->sa_family == AF_PACKET)))
         {
             idx = if_nametoindex(address->ifa_name);
             if(!idx){
@@ -1117,7 +1119,9 @@ void interface_diag()
      */
     while (address)
     {
-        if (address->ifa_addr && (address->ifa_addr->sa_family == AF_INET))
+        if (address->ifa_addr && ((!strncmp(address->ifa_name, "ziti0", 4) && (address->ifa_addr->sa_family == AF_INET))
+          || (!strncmp(address->ifa_name, "tun", 3) && (address->ifa_addr->sa_family == AF_INET))
+           || (address->ifa_addr->sa_family == AF_PACKET)))
         {
             idx = if_nametoindex(address->ifa_name);
             if(!idx){