diff --git a/src/systemd/meson.build b/src/systemd/meson.build
index 849502921d..dde0aaf781 100644
--- a/src/systemd/meson.build
+++ b/src/systemd/meson.build
@@ -17,20 +17,23 @@ _systemd_headers = '''
 # https://github.com/mesonbuild/meson/issues/1633
 systemd_headers = files(_systemd_headers)
 
-#  sd-dhcp6-client.h
-#  sd-dhcp6-lease.h
-#  sd-dhcp-client.h
-#  sd-dhcp-lease.h
-#  sd-dhcp-server.h
-#  sd-ipv4acd.h
-#  sd-ipv4ll.h
-#  sd-lldp.h
-#  sd-ndisc.h
-#  sd-netlink.h
-#  sd-network.h
-#  sd-path.h
-#  sd-resolve.h
-#  sd-utf8.h
+_not_installed_headers = '''
+        sd-dhcp6-client.h
+        sd-dhcp6-lease.h
+        sd-dhcp-client.h
+        sd-dhcp-lease.h
+        sd-dhcp-server.h
+        sd-ipv4acd.h
+        sd-ipv4ll.h
+        sd-lldp.h
+        sd-ndisc.h
+        sd-netlink.h
+        sd-network.h
+        sd-path.h
+        sd-radv.h
+        sd-resolve.h
+        sd-utf8.h
+'''.split()
 
 install_headers(
         systemd_headers,
@@ -62,7 +65,7 @@ if cxx.found()
         endif
 endif
 
-foreach header : _systemd_headers
+foreach header : _systemd_headers + _not_installed_headers
         foreach opt : opts
                 name = ''.join([header, ':'] + opt)
                 if want_tests != 'false'
diff --git a/src/systemd/sd-netlink.h b/src/systemd/sd-netlink.h
index 7650ff4532..604edb9cfb 100644
--- a/src/systemd/sd-netlink.h
+++ b/src/systemd/sd-netlink.h
@@ -18,10 +18,11 @@
 ***/
 
 #include <inttypes.h>
+#include <linux/neighbour.h>
+#include <linux/rtnetlink.h>
+#include <net/ethernet.h>
 #include <netinet/ether.h>
 #include <netinet/in.h>
-#include <linux/rtnetlink.h>
-#include <linux/neighbour.h>
 
 #include "sd-event.h"
 
diff --git a/src/systemd/sd-resolve.h b/src/systemd/sd-resolve.h
index 954b9f0206..5695119b40 100644
--- a/src/systemd/sd-resolve.h
+++ b/src/systemd/sd-resolve.h
@@ -17,6 +17,11 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+/* 'struct addrinfo' needs _GNU_SOURCE */
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE 1
+#endif
+
 #include <inttypes.h>
 #include <netdb.h>
 #include <sys/socket.h>