diff -Nru pdns-4.3.1/debian/changelog pdns-4.3.1/debian/changelog
--- pdns-4.3.1/debian/changelog	2020-09-22 20:25:52.000000000 +0000
+++ pdns-4.3.1/debian/changelog	2020-09-28 09:10:17.000000000 +0000
@@ -1,3 +1,10 @@
+pdns (4.3.1-1+rpi1) bullseye-staging; urgency=medium
+
+  [changes brought forward from 4.1.0-1+rpi1 by Peter Michael Green <plugwash@raspbian.org> at Sun, 31 Dec 2017 14:27:56 +0000]
+  * Add -latomic to ldflags.
+
+ -- Raspbian forward porter <root@raspbian.org>  Mon, 28 Sep 2020 09:10:17 +0000
+
 pdns (4.3.1-1) unstable; urgency=medium
 
   * New upstream version 4.3.1
diff -Nru pdns-4.3.1/debian/rules pdns-4.3.1/debian/rules
--- pdns-4.3.1/debian/rules	2020-09-22 20:25:52.000000000 +0000
+++ pdns-4.3.1/debian/rules	2020-09-28 09:10:17.000000000 +0000
@@ -8,6 +8,7 @@
 
 # Vendor and version
 CXXFLAGS += -DPACKAGEVERSION='"$(DEB_VERSION).$(DEB_VENDOR)"'
+LDFLAGS += -latomic
 
 # Avoid test failure in docker.
 export PDNS_TEST_NO_IPV6=1