I was able to confirm/validate the failure on a set of LXC containers:
bladernr@xenial:~$ iperf3 -c 10.148.80.151 -i 60 -n 999G
Connecting to host 10.148.80.151, port 5201
[ 4] local 10.148.80.13 port 44408 connected to 10.148.80.151 port 5201
[ ID] Interval Transfer Bandwidth Retr Cwnd
[ 4] 0.00-60.00 sec 464 GBytes 66.4 Gbits/sec 236 3.00 MBytes
[ 4] 60.00-120.00 sec 456 GBytes 65.3 Gbits/sec 0 3.00 MBytes
[ 4] 120.00-130.09 sec 78.8 GBytes 67.1 Gbits/sec 0 3.00 MBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth Retr
[ 4] 0.00-130.09 sec 999 GBytes 66.0 Gbits/sec 236 sender
[ 4] 0.00-130.09 sec 999 GBytes 66.0 Gbits/sec receiver
bladernr@xenial:~$ iperf3 -c 10.148.80.151 -i 60 -n 1500G
Connecting to host 10.148.80.151, port 5201
[ 4] local 10.148.80.13 port 44538 connected to 10.148.80.151 port 5201
[ ID] Interval Transfer Bandwidth Retr Cwnd
[ 4] 0.00-60.00 sec 456 GBytes 65.3 Gbits/sec 2851 1.16 MBytes
[ 4] 60.00-120.00 sec 469 GBytes 67.1 Gbits/sec 66 2.48 MBytes
q[ 4] 120.00-180.00 sec 469 GBytes 67.2 Gbits/sec 137 3.02 MBytes
[ 4] 180.00-193.34 sec 106 GBytes 68.2 Gbits/sec 0 3.02 MBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth Retr
[ 4] 0.00-193.34 sec 0.00 (null)s 66.6 Gbits/sec 3054 sender
[ 4] 0.00-193.34 sec 0.00 (null)s 66.6 Gbits/sec receiver
bladernr@xenial:~$ apt-cache policy iperf3
iperf3:
Installed: 3.0.11-1
Candidate: 3.0.11-1
Version table:
*** 3.0.11-1 500
500 http://archive.ubuntu.com/ubuntu xenial/universe amd64 Packages
100 /var/lib/dpkg/status
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https://bugs.launchpad.net/bugs/1795481
Title:
iperf3 Transfer Summary shows NULL above certain point
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