networkd: make IP forwarding for IPv4 and IPv6 individually configurable

src/shared/conf-parser.c

@@ -823,8 +823,7 @@ int config_parse_log_facility(
 
         x = log_facility_unshifted_from_string(rvalue);
         if (x < 0) {
-                log_syntax(unit, LOG_ERR, filename, line, EINVAL,
-                           "Failed to parse log facility, ignoring: %s", rvalue);
+                log_syntax(unit, LOG_ERR, filename, line, EINVAL, "Failed to parse log facility, ignoring: %s", rvalue);
                 return 0;
         }
 
@@ -855,8 +854,7 @@ int config_parse_log_level(
 
         x = log_level_from_string(rvalue);
         if (x < 0) {
-                log_syntax(unit, LOG_ERR, filename, line, EINVAL,
-                           "Failed to parse log level, ignoring: %s", rvalue);
+                log_syntax(unit, LOG_ERR, filename, line, EINVAL, "Failed to parse log level, ignoring: %s", rvalue);
                 return 0;
         }
 

src/shared/util.h

@@ -143,6 +143,10 @@ static inline const char* true_false(bool b) {
         return b ? "true" : "false";
 }
 
+static inline const char* one_zero(bool b) {
+        return b ? "1" : "0";
+}
+
 static inline const char* strempty(const char *s) {
         return s ? s : "";
 }