diff --git a/doc/plan.org b/doc/plan.org
index ea3bb7b..47688cc 100644
--- a/doc/plan.org
+++ b/doc/plan.org
@@ -66,6 +66,7 @@
 |            | - Python2 ipaddress fix (import future)                                    |       |
 |            | - P4 checksum_with_payload                                                 |       |
 |            | - Reading scapy / inet6                                                    |       |
+|            | - Further checksum tests -> required everywhere in IPv6                    |       |
 |            |                                                                            |       |
 |            |                                                                            |       |
 | 2019-03-08 | NAT46 1:1 table ICMP, ICMPv6 working                                       |       |
diff --git a/p4src/checksums.p4 b/p4src/checksums.p4
index f4ef104..aa10451 100644
--- a/p4src/checksums.p4
+++ b/p4src/checksums.p4
@@ -26,7 +26,7 @@ control MyComputeChecksum(inout headers  hdr, inout metadata meta) {
             hdr.icmp6.checksum = 42; /* must be correct */
         }
 
-        verify_checksum_with_payload<T, O>(in bool condition, in T data, inout O checksum, HashAlgorithm algo);
+        // verify_checksum_with_payload<T, O>(in bool condition, in T data, inout O checksum, HashAlgorithm algo);
         // GRRRRR bit<32> icmp6_len = 32; /* for icmp6 NS */
 
 		// GRRRRR update_checksum (