+ char *l = 0;
+ bool enabled;
+
+ if (access("/sys/module/ipv6", F_OK) != 0)
+ return 0;
+
+ /* If we can't check "disable" parameter, assume enabled */
+ if (read_one_line_file("/sys/module/ipv6/parameters/disable", &l) < 0)
+ return 1;
+
+ /* If module was loaded with disable=1 no IPv6 available */
+ enabled = l[0] == '0';
+ free(l);
+
+ return enabled;