Description of problem:
i40e driver: ipv6 ping failed when sr-iov vf add to ovs bridge

Version-Release number of selected component (if applicable):
[root@netqe22 ~]# cat /etc/redhat-release 
Red Hat Enterprise Linux release 8.3 (Ootpa)
[root@netqe22 ~]# uname -a
Linux netqe22.knqe.lab.eng.bos.redhat.com 4.18.0-240.el8.x86_64 #1 SMP Wed Sep 23 05:13:10 EDT 2020 x86_64 x86_64 x86_64 GNU/Linux
[root@netqe22 ~]# rpm -qa|grep dpdk
dpdk-19.11.3-1.el8.x86_64
dpdk-tools-19.11.3-1.el8.x86_64

[root@netqe22 ~]# rpm -qa|grep openv
openvswitch-selinux-extra-policy-1.0-23.el8fdp.noarch
openvswitch2.13-2.13.0-77.el8fdp.x86_64

[root@netqe22 ~]# ethtool -i enp3s0f1
driver: i40e
version: 2.8.20-k
firmware-version: 6.01 0x800035cf 1.1747.0
expansion-rom-version: 
bus-info: 0000:03:00.1
supports-statistics: yes
supports-test: yes
supports-eeprom-access: yes
supports-register-dump: yes
supports-priv-flags: yes

How reproducible:


Steps to Reproduce:
Netqe22 i40e nic connect with Netqe32 i40e nic directly.

Two server build same topo. On netqe22
1. create two vf for pf enp3s0f0

2.Bind vf 1 to dpdk, and add dpdk0 to ovs bridge.
 /usr/share/dpdk/usertools/dpdk-devbind.py -b vfio-pci 0000:03:02.1
 systemctl restart openvswitch
 ovs-vsctl set Open_vSwitch . 'other_config={}'
 ovs-vsctl --no-wait set Open_vSwitch . other_config:dpdk-init=true
 ovs-vsctl --no-wait set Open_vSwitch . other_config:dpdk-socket-mem=1024,1024
 ovs-vsctl set Open_vSwitch . other_config:pmd-cpu-mask=0x500000500000
 ovs-vsctl add-br ovsbr0 -- set bridge ovsbr0 datapath_type=netdev
 ovs-vsctl add-port ovsbr0 dpdk0 -- set Interface dpdk0 type=dpdk type=dpdk options:dpdk-devargs=0000:03:02.1
 ovs-vsctl add-port ovsbr0 dpdkvhostuserclient0 -- set Interface dpdkvhostuserclient0 type=dpdkvhostuserclient -- set Interface dpdkvhostuserclient0 options:vhost-server-path=/tmp/dpdkvhostuserclient0

3.Configure the vf 1 mac same with guest's mac
ip link set enp3s0f0 vf 1 mac $guest_mac

4. Inside guest, configure ipv4 and ipv6 address for eth0
ip addr add 20.0.0.2/24 dev eth0
ip addr add 2001:5c0:9168::2/24 dev eth0

5. On netqe32 system, run above similar command on it. 

[root@netqe22 ~]# ovs-vsctl show
0f33bdd1-3a4d-4b05-ba46-55413d87c26d
    Bridge ovsbr0
        datapath_type: netdev
        Port ovsbr0
            Interface ovsbr0
                type: internal
        Port dpdk0
            Interface dpdk0
                type: dpdk
                options: {dpdk-devargs="0000:03:02.1"}
        Port dpdkvhostuserclient0
            Interface dpdkvhostuserclient0
                type: dpdkvhostuserclient
                options: {vhost-server-path="/tmp/dpdkvhostuserclient0"}
    ovs_version: "2.13.2"
6. On netqe32 guest, ping the ip on netqe22 guest.


Actual results:
On netqe32, ipv4 ping successfully, ipv6 ping failed. When configure vf 1 trust on, ipv6 still ping failed.

Expected results:
ipv6 can ping successfully.

Additional info:
https://beaker.engineering.redhat.com/jobs/5035715