--- /dev/null
+From fe0e16db093a7da09fcb52a2bc7017197047443d Mon Sep 17 00:00:00 2001
+From: Yu Watanabe <watanabe.yu+github@gmail.com>
+Date: Mon, 13 May 2019 05:40:31 +0900
+Subject: [PATCH] network: do not use ordered_set_printf() for DOMAINS= or
+ ROUTE_DOMAINS=
+
+This partially reverts 5e2a51d588dde4b52c6017ea80b75c16e6e23431.
+
+Fixes #12531.
+---
+ src/network/networkd-link.c | 17 +++++++++++------
+ 1 file changed, 11 insertions(+), 6 deletions(-)
+
+diff --git a/src/network/networkd-link.c b/src/network/networkd-link.c
+index f8ee48802cb..1dc10c65a1b 100644
+--- a/src/network/networkd-link.c
++++ b/src/network/networkd-link.c
+@@ -3495,12 +3495,11 @@ int link_save(Link *link) {
+ admin_state, oper_state);
+
+ if (link->network) {
+- bool space;
++ char **dhcp6_domains = NULL, **dhcp_domains = NULL;
++ const char *dhcp_domainname = NULL, *p;
+ sd_dhcp6_lease *dhcp6_lease = NULL;
+- const char *dhcp_domainname = NULL;
+- char **dhcp6_domains = NULL;
+- char **dhcp_domains = NULL;
+ unsigned j;
++ bool space;
+
+ fprintf(f, "REQUIRED_FOR_ONLINE=%s\n",
+ yes_no(link->network->required_for_online));
+@@ -3617,7 +3616,10 @@ int link_save(Link *link) {
+ (void) sd_dhcp6_lease_get_domains(dhcp6_lease, &dhcp6_domains);
+ }
+
+- ordered_set_print(f, "DOMAINS=", link->network->search_domains);
++ fputs("DOMAINS=", f);
++ space = false;
++ ORDERED_SET_FOREACH(p, link->network->search_domains, i)
++ fputs_with_space(f, p, NULL, &space);
+
+ if (link->network->dhcp_use_domains == DHCP_USE_DOMAINS_YES) {
+ NDiscDNSSL *dd;
+@@ -3635,7 +3637,10 @@ int link_save(Link *link) {
+
+ fputc('\n', f);
+
+- ordered_set_print(f, "ROUTE_DOMAINS=", link->network->route_domains);
++ fputs("ROUTE_DOMAINS=", f);
++ space = false;
++ ORDERED_SET_FOREACH(p, link->network->route_domains, i)
++ fputs_with_space(f, p, NULL, &space);
+
+ if (link->network->dhcp_use_domains == DHCP_USE_DOMAINS_ROUTE) {
+ NDiscDNSSL *dd;