diff -uNr systemd-233/src/network/networkd-link.c systemd-233-new/src/network/networkd-link.c
--- systemd-233/src/network/networkd-link.c	2017-11-07 20:56:56.740898979 +0000
+++ systemd-233-new/src/network/networkd-link.c	2017-11-07 21:02:26.532914705 +0000
@@ -213,8 +213,10 @@
         p = strjoina("/proc/sys/net/ipv6/conf/", link->ifname, "/disable_ipv6");
         _cleanup_free_ char *val = NULL;
         r = read_one_line_file(p, &val);
-        if (r < 0)
+        if (r < 0) {
                 log_link_warning_errno(link, r, "Cannot read ipv6 state for interface: %m");
+                return false;
+        }
 	if (streq(val, "0"))
                 return false;