<p></p>
<p>well, good news is that this is not present when rebasing to latest master.</p>
<p>This PR:</p>
<pre><code>/home/jialamos/Development/RIOT/dist/tools/pyterm/pyterm -p "/dev/ttyUSB1" -b "115200"  
Twisted not available, please install it if you want to use pyterm's JSON capabilities
2021-01-13 20:50:56,754 # Connect to serial port /dev/ttyUSB1
Welcome to pyterm!
Type '/exit' to exit.
2021-01-13 20:50:58,572 # main(): This is RIOT! (Version: 2021.01-devel-1352-g0cfa16-copr/
15397)
2021-01-13 20:50:58,575 # RIOT network stack example application
2021-01-13 20:50:58,576 # All up, running the shell now
ping fe80::212:4b00:60d:b2f1 -s 1024 -c 10
2021-01-13 20:51:27,291 #  ping fe80::212:4b00:60d:b2f1 -s 1024 -c 10
2021-01-13 20:51:30,405 # 1032 bytes from fe80::212:4b00:60d:b2f1%6: icmp_seq=3 ttl=64 rss
i=-82 dBm time=102.327 ms
2021-01-13 20:51:34,404 # 1032 bytes from fe80::212:4b00:60d:b2f1%6: icmp_seq=7 ttl=64 rss
i=-82 dBm time=102.345 ms
2021-01-13 20:51:35,405 # 1032 bytes from fe80::212:4b00:60d:b2f1%6: icmp_seq=8 ttl=64 rss
i=-82 dBm time=102.332 ms
2021-01-13 20:51:37,295 # 
2021-01-13 20:51:37,298 # --- fe80::212:4b00:60d:b2f1 PING statistics ---
2021-01-13 20:51:37,302 # 10 packets transmitted, 3 packets received, 70% packet loss
2021-01-13 20:51:37,307 # round-trip min/avg/max = 102.327/102.334/102.345 ms
> 2021-01-13 20:51:39,165 # Exiting Pyterm
</code></pre>
<p>This PR rebased on master</p>
<pre><code>ping fe80::ac8d:fee1:6050:f519 -s 1024 -c 10
2021-01-13 20:53:22,074 #  ping fe80::ac8d:fee1:6050:f519 -s 1024 -c 10
2021-01-13 20:53:22,236 # 1032 bytes from fe80::ac8d:fee1:6050:f519%6: icmp_seq=0 ttl=64 r
ssi=-28 dBm time=152.037 ms
2021-01-13 20:53:23,238 # 1032 bytes from fe80::ac8d:fee1:6050:f519%6: icmp_seq=1 ttl=64 r
ssi=-29 dBm time=151.294 ms
2021-01-13 20:53:24,237 # 1032 bytes from fe80::ac8d:fee1:6050:f519%6: icmp_seq=2 ttl=64 r
ssi=-28 dBm time=153.737 ms
2021-01-13 20:53:25,236 # 1032 bytes from fe80::ac8d:fee1:6050:f519%6: icmp_seq=3 ttl=64 r
ssi=-28 dBm time=149.639 ms
2021-01-13 20:53:26,242 # 1032 bytes from fe80::ac8d:fee1:6050:f519%6: icmp_seq=4 ttl=64 r
ssi=-28 dBm time=155.107 ms
2021-01-13 20:53:27,252 # 1032 bytes from fe80::ac8d:fee1:6050:f519%6: icmp_seq=5 ttl=64 r
ssi=-28 dBm time=165.439 ms
2021-01-13 20:53:28,232 # 1032 bytes from fe80::ac8d:fee1:6050:f519%6: icmp_seq=6 ttl=64 r
ssi=-28 dBm time=145.569 ms
2021-01-13 20:53:29,241 # 1032 bytes from fe80::ac8d:fee1:6050:f519%6: icmp_seq=7 ttl=64 r
ssi=-28 dBm time=153.887 ms
2021-01-13 20:53:30,243 # 1032 bytes from fe80::ac8d:fee1:6050:f519%6: icmp_seq=8 ttl=64 r
ssi=-28 dBm time=154.819 ms
2021-01-13 20:53:31,245 # 1032 bytes from fe80::ac8d:fee1:6050:f519%6: icmp_seq=9 ttl=64 r
ssi=-28 dBm time=153.739 ms
2021-01-13 20:53:31,246 # 
2021-01-13 20:53:31,255 # --- fe80::ac8d:fee1:6050:f519 PING statistics ---
2021-01-13 20:53:31,257 # 10 packets transmitted, 10 packets received, 0% pack
</code></pre>
<p>It means, there was an issue in between and we never discovered it O.o. Luckily the Radio HAL tests of <a class="user-mention" data-hovercard-type="user" data-hovercard-url="/users/LarsKowoll/hovercard" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" href="https://github.com/LarsKowoll">@LarsKowoll</a> and RIOTCtrl will save us from this in the near future</p>

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