From 8fdbadfbb281d75be4ffcaaa5c19815d231182ca Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=9D=8E=E9=80=9A=E6=B4=B2?= <carter.li@eoitek.com>
Date: Thu, 15 Sep 2022 11:00:11 +0800
Subject: [PATCH] LocalIp: fix `--localip-show-loop` on macOS

loop on macOS is `lo0`
---
 src/modules/localip.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/modules/localip.c b/src/modules/localip.c
index 1d8192df4..6bc2455f2 100644
--- a/src/modules/localip.c
+++ b/src/modules/localip.c
@@ -5,6 +5,7 @@
 #define FF_LOCALIP_NUM_FORMAT_ARGS 1
 
 #include <string.h>
+#include <ctype.h>
 #include <ifaddrs.h>
 #include <netinet/in.h>
 #include <arpa/inet.h>
@@ -54,7 +55,7 @@ void ffPrintLocalIp(FFinstance* instance)
             continue;
 
         // loop back
-        if (strcmp(ifa->ifa_name, "lo") == 0 && !instance->config.localIpShowLoop)
+        if (strncmp(ifa->ifa_name, "lo", 2) == 0 && (ifa->ifa_name[2] == '\0' || isdigit(ifa->ifa_name[2])) && !instance->config.localIpShowLoop)
             continue;
 
         if (ifa->ifa_addr->sa_family == AF_INET) { // check it is IP4