Comment 4 for bug 1921104

------- Comment From <email address hidden> 2021-03-25 04:24 EDT-------
I tested Frank's build successfully.

Using adapter firmware 16.27.2008.

BAD TEST
=====================
root@pok1-qz1-sr1-rk011-s01:~# uname -a
Linux pok1-qz1-sr1-rk011-s01 5.4.0-67-generic #75-Ubuntu SMP Fri Feb 19 18:00:48 UTC 2021 s390x s390x s390x GNU/Linux

root@pok1-qz1-sr1-rk011-s01:~# ifconfig p0 172.31.22.3/31 mtu 9100 up
root@pok1-qz1-sr1-rk011-s01:~# ping 172.31.22.2
PING 172.31.22.2 (172.31.22.2) 56(84) bytes of data.
^C
--- 172.31.22.2 ping statistics ---
13 packets transmitted, 0 received, 100% packet loss, time 12445ms

GOOD TEST
=====================
root@pok1-qz1-sr1-rk011-s01:~# uname -a
Linux pok1-qz1-sr1-rk011-s01 5.4.0-68-generic #76~lp1921104-Ubuntu SMP Wed Mar 24 11:39:26 UTC 2021 s390x s390x s390x GNU/Linux

root@pok1-qz1-sr1-rk011-s01:~# ifconfig p0 172.31.22.3/31 mtu 9100 up
root@pok1-qz1-sr1-rk011-s01:~# ping 172.31.22.2
PING 172.31.22.2 (172.31.22.2) 56(84) bytes of data.
64 bytes from 172.31.22.2: icmp_seq=1 ttl=0 time=122 ms
64 bytes from 172.31.22.2: icmp_seq=2 ttl=0 time=0.089 ms
64 bytes from 172.31.22.2: icmp_seq=3 ttl=0 time=0.075 ms

------- Comment From <email address hidden> 2021-03-25 04:26 EDT-------
We also got positive reviews from the Mellanox team:

Idan Werpoler 18:47
it is ok,they told me

Idan Werpoler 19:02
@Aya Levin reviewed the fix also and it?s looks fine.