Did you connect enp0s30f4 with a network and make sure there is IP assigned by DHCP ?



% grep '' ./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_*stderr
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_enp0s30f4.stderr:ERROR:root:No IP address for enp0s30f4
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_enp0s30f4.stderr:ERROR:root:No netmask for enp0s30f4
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_enp0s30f4.stderr:ERROR:root:Device enp0s30f4: Invalid IP Address
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_enp0s30f4.stderr:ERROR:root:  Expected 4 octets in 'None'
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_enp0s30f4.stderr:ERROR:root:Aborting test now
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_enp0s31f6.stderr:INFO:root:-------------------- Test Run Number 1 --------------------
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_enp0s31f6.stderr:INFO:root:Using 1 thread.
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_enp0s31f6.stderr:INFO:root:Avg Transfer speed: 934.5666666666667 Mb/s
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_enp0s31f6.stderr:INFO:root:93.46% of theoretical max 1000 Mb/s
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_enp0s31f6.stderr:INFO:root:Average CPU utilization: 1.3%
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_enp0s31f6.stderr:INFO:root:
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_enp0s31f6.stderr:INFO:root:-------------------- Test Run Number 2 --------------------
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_enp0s31f6.stderr:INFO:root:Using 1 thread.
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_enp0s31f6.stderr:INFO:root:Avg Transfer speed: 934.5888888888888 Mb/s
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_enp0s31f6.stderr:INFO:root:93.46% of theoretical max 1000 Mb/s
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_enp0s31f6.stderr:INFO:root:Average CPU utilization: 1.2%
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_enp0s31f6.stderr:INFO:root:
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_enp0s31f6.stderr:INFO:root:-------------------- Test Run Number 3 --------------------
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_enp0s31f6.stderr:INFO:root:Using 1 thread.
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_enp0s31f6.stderr:INFO:root:Avg Transfer speed: 934.8 Mb/s
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_enp0s31f6.stderr:INFO:root:93.48% of theoretical max 1000 Mb/s
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_enp0s31f6.stderr:INFO:root:Average CPU utilization: 1.3%
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_enp0s31f6.stderr:INFO:root:
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_enp0s31f6.stderr:INFO:root:-------------------- Test Run Number 4 --------------------
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_enp0s31f6.stderr:INFO:root:Using 1 thread.
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_enp0s31f6.stderr:INFO:root:Avg Transfer speed: 931.3444444444444 Mb/s
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_enp0s31f6.stderr:INFO:root:93.13% of theoretical max 1000 Mb/s
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_enp0s31f6.stderr:INFO:root:Average CPU utilization: 1.8%
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_enp0s31f6.stderr:INFO:root:
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_enp0s31f6.stderr:RTNETLINK answers: Invalid argument
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_enp0s31f6.stderr:ERROR:root:Failed to restore enp0s30f4:Command '['ip', 'link', 'set', 'dev', 'enp0s30f4', 'up']' returned non-zero exit status 2.
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_reverse_enp0s30f4.stderr:ERROR:root:No IP address for enp0s30f4
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_reverse_enp0s30f4.stderr:ERROR:root:No netmask for enp0s30f4
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_reverse_enp0s30f4.stderr:ERROR:root:Device enp0s30f4: Invalid IP Address
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_reverse_enp0s30f4.stderr:ERROR:root:  Expected 4 octets in 'None'
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_reverse_enp0s30f4.stderr:ERROR:root:Aborting test now
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_reverse_enp0s31f6.stderr:INFO:root:-------------------- Test Run Number 1 --------------------
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_reverse_enp0s31f6.stderr:INFO:root:Using 1 thread.
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_reverse_enp0s31f6.stderr:INFO:root:Avg Transfer speed: 934.1555555555556 Mb/s
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_reverse_enp0s31f6.stderr:INFO:root:93.42% of theoretical max 1000 Mb/s
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_reverse_enp0s31f6.stderr:INFO:root:Average CPU utilization: 0.0%
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_reverse_enp0s31f6.stderr:INFO:root:
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_reverse_enp0s31f6.stderr:INFO:root:-------------------- Test Run Number 2 --------------------
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_reverse_enp0s31f6.stderr:INFO:root:Using 1 thread.
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_reverse_enp0s31f6.stderr:INFO:root:Avg Transfer speed: 933.9888888888889 Mb/s
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_reverse_enp0s31f6.stderr:INFO:root:93.40% of theoretical max 1000 Mb/s
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_reverse_enp0s31f6.stderr:INFO:root:Average CPU utilization: 0.0%
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_reverse_enp0s31f6.stderr:INFO:root:
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_reverse_enp0s31f6.stderr:INFO:root:-------------------- Test Run Number 3 --------------------
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_reverse_enp0s31f6.stderr:INFO:root:Using 1 thread.
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_reverse_enp0s31f6.stderr:INFO:root:Avg Transfer speed: 934.1666666666666 Mb/s
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_reverse_enp0s31f6.stderr:INFO:root:93.42% of theoretical max 1000 Mb/s
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_reverse_enp0s31f6.stderr:INFO:root:Average CPU utilization: 0.0%
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_reverse_enp0s31f6.stderr:INFO:root:
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_reverse_enp0s31f6.stderr:INFO:root:-------------------- Test Run Number 4 --------------------
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_reverse_enp0s31f6.stderr:INFO:root:Using 1 thread.
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_reverse_enp0s31f6.stderr:INFO:root:Avg Transfer speed: 934.1222222222223 Mb/s
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_reverse_enp0s31f6.stderr:INFO:root:93.41% of theoretical max 1000 Mb/s
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_reverse_enp0s31f6.stderr:INFO:root:Average CPU utilization: 0.0%
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_reverse_enp0s31f6.stderr:INFO:root:
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_reverse_enp0s31f6.stderr:RTNETLINK answers: Invalid argument
./var/tmp/checkbox-ng/sessions/session_title-2021-09-07T14.06.44.session/io-logs/com.canonical.certification__ethernet_iperf3_reverse_enp0s31f6.stderr:ERROR:root:Failed to restore enp0s30f4:Command '['ip', 'link', 'set', 'dev', 'enp0s30f4', 'up']' returned non-zero exit status 2.