diff --git a/tests/system-traffic.at b/tests/system-traffic.at
index 375a8aa2f..78ab7d7de 100644
--- a/tests/system-traffic.at
+++ b/tests/system-traffic.at
@@ -7786,26 +7786,13 @@ AT_CHECK([ovs-ofctl packet-out br0 "in_port=ovs-client,\
 packet=00000000102000000000201008004500001C000040000A11C762C0A8140AC0A814140001000200080000,actions=resubmit(,0)"])
 dnl Send UDP response server->client
 AT_CHECK([ovs-ofctl packet-out br0 "in_port=ovs-server,\
-packet=00000000201000000000102008004500001C000040000A11D162C0A80A14C0A8140A0002000100080000,actions=resubmit(,0)"])
+packet=00000000201000000000102008004500001C000020000A11D162C0A80A14C0A8140A0002000100080000,actions=resubmit(,0)"])
 dnl Fake router sending ICMP need frag router->server
 AT_CHECK([ovs-ofctl packet-out br0 "in_port=ovs-client,\
-packet=000000001020000000002000080045000038011F0000FF011140C0A81401C0A814140304F778000005784500001C000040000A11C762C0A81414C0A8140A0002000100080000,\
+packet=000000001020000000002000080045000038011F0000FF011140C0A81401C0A814140304f778000005784500001C000020000A11e762C0A81414C0A8140A0002000100080000,\
 actions=resubmit(,0)"
 ])
 
-AT_CHECK([ovs-appctl revalidator/purge], [0])
-AT_CHECK([ovs-ofctl -O OpenFlow15 dump-flows br0 | ofctl_strip | sort ], [0], [dnl
- n_packets=3, n_bytes=154, reset_counts ip actions=ct(table=1,zone=42,nat)
- table=1, n_packets=1, n_bytes=42, reset_counts ct_state=+new+trk,ip,in_port=1 actions=ct(commit,table=2,zone=42,nat(dst=192.168.10.20))
- table=1, n_packets=1, n_bytes=42, reset_counts ip actions=resubmit(,2)
- table=1, n_packets=1, n_bytes=70, reset_counts ct_state=+rel-rpl+trk,icmp actions=ct(commit,table=2,zone=42,nat)
- table=2, n_packets=1, n_bytes=42, reset_counts ct_state=+new+trk,ip,in_port=1 actions=output:2
- table=2, n_packets=1, n_bytes=42, reset_counts ct_state=+rpl+trk,ip,in_port=2 actions=output:1
- table=2, n_packets=1, n_bytes=70, reset_counts ct_state=+rel+trk,icmp,in_port=1 actions=output:2
- table=2, reset_counts ct_state=+rel+trk,icmp,in_port=2 actions=output:1
-OFPST_FLOW reply (OF1.5):
-])
-
 AT_CHECK([ovs-appctl dpctl/dump-conntrack | grep "192.168.20.10"], [0], [dnl
 udp,orig=(src=192.168.20.10,dst=192.168.20.20,sport=1,dport=2),reply=(src=192.168.10.20,dst=192.168.20.10,sport=2,dport=1),zone=42
 ])
@@ -7813,7 +7800,7 @@ udp,orig=(src=192.168.20.10,dst=192.168.20.20,sport=1,dport=2),reply=(src=192.16
 OVS_WAIT_UNTIL([ovs-pcap server.pcap | grep 000000001020000000002000])
 
 AT_CHECK([ovs-pcap server.pcap | grep 000000001020000000002000], [0], [dnl
-000000001020000000002000080045000038011f0000ff011b40c0a81401c0a80a140304f778000005784500001c000040000a11d162c0a80a14c0a8140a0002000100080000
+000000001020000000002000080045000038011f0000ff011b40c0a81401c0a80a140304f778000005784500001c000020000a11f162c0a80a14c0a8140a0002000100080000
 ])
 
 dnl Check the ICMP error in reply direction
@@ -7832,19 +7819,6 @@ packet=000000002010000000002000080045000038011F0000FF01114AC0A81401C0A8140A0304F
 actions=resubmit(,0)"
 ])
 
-AT_CHECK([ovs-appctl revalidator/purge], [0])
-AT_CHECK([ovs-ofctl -O OpenFlow15 dump-flows br0 | ofctl_strip | sort ], [0], [dnl
- n_packets=5, n_bytes=266, reset_counts ip actions=ct(table=1,zone=42,nat)
- table=1, n_packets=1, n_bytes=70, reset_counts ct_state=+rel-rpl+trk,icmp actions=ct(commit,table=2,zone=42,nat)
- table=1, n_packets=2, n_bytes=112, reset_counts ip actions=resubmit(,2)
- table=1, n_packets=2, n_bytes=84, reset_counts ct_state=+new+trk,ip,in_port=1 actions=ct(commit,table=2,zone=42,nat(dst=192.168.10.20))
- table=2, n_packets=1, n_bytes=42, reset_counts ct_state=+rpl+trk,ip,in_port=2 actions=output:1
- table=2, n_packets=1, n_bytes=70, reset_counts ct_state=+rel+trk,icmp,in_port=1 actions=output:2
- table=2, n_packets=1, n_bytes=70, reset_counts ct_state=+rel+trk,icmp,in_port=2 actions=output:1
- table=2, n_packets=2, n_bytes=84, reset_counts ct_state=+new+trk,ip,in_port=1 actions=output:2
-OFPST_FLOW reply (OF1.5):
-])
-
 AT_CHECK([ovs-appctl dpctl/dump-conntrack | grep "192.168.20.10"], [0], [dnl
 udp,orig=(src=192.168.20.10,dst=192.168.20.20,sport=1,dport=2),reply=(src=192.168.10.20,dst=192.168.20.10,sport=2,dport=1),zone=42
 ])

diff --git a/lib/conntrack.c b/lib/conntrack.c
index b533dd3df..5d78975cb 100644
--- a/lib/conntrack.c
+++ b/lib/conntrack.c
@@ -1523,10 +1523,6 @@ extract_l3_ipv4(struct conn_key *key, const void *data, size_t size,
         return false;
     }
 
-    if (IP_IS_FRAGMENT(ip->ip_frag_off)) {
-        return false;
-    }
-
     if (validate_checksum && csum(data, ip_len) != 0) {
         COVERAGE_INC(conntrack_l3csum_err);
         return false;