bind to 127.0.0.1 by default

src/local.c

@@ -1018,7 +1018,7 @@ int main(int argc, char **argv)
     }
 
     if (local_addr == NULL) {
-        local_addr = "0.0.0.0";
+        local_addr = "127.0.0.1";
     }
 
     if (pid_flags) {
@@ -1162,7 +1162,7 @@ int start_ss_local_server(profile_t profile)
     }
 
     if (local_addr == NULL) {
-        local_addr = "0.0.0.0";
+        local_addr = "127.0.0.1";
     }
 
 #ifdef __MINGW32__

src/redir.c

@@ -693,7 +693,7 @@ int main(int argc, char **argv)
     }
 
     if (local_addr == NULL) {
-        local_addr = "0.0.0.0";
+        local_addr = "127.0.0.1";
     }
 
     if (pid_flags) {

src/tunnel.c

@@ -747,7 +747,7 @@ int main(int argc, char **argv)
     }
 
     if (local_addr == NULL) {
-        local_addr = "0.0.0.0";
+        local_addr = "127.0.0.1";
     }
 
     if (pid_flags) {