Greetings, I am testing kea docker in lab. I followed the instructions of the official kea docker document and configured ipvlan L2. And I found I had ping loss from my docker container to gateway IP as well as to Google IPv6 address. I decided to test with pure Alpin Linux docker as well as Rocky Linux docker, and I didn’t see any packet losses. I also run container based on kea 2.4.1 image, and I didn’t see any packet losses either. And seems it only happen to kea 2.6.0 docker image. And it happens every time I tried on 2.6.1 docker.
Test results: 1st test Rocky Linux: [root@keadockerpilot ~]# docker run --name kea6 --volume /tmp/kea_test:/etc/kea --net ipvlan0 -it rockylinux:8 Unable to find image 'rockylinux:8' locally 8: Pulling from library/rockylinux 9088cdb84e39: Pull complete Digest: sha256:9794037624aaa6212aeada1d28861ef5e0a935adaf93e4ef79837119f2a2d04c Status: Downloaded newer image for rockylinux:8 [root@a79c528e9105 /]# [root@a79c528e9105 /]# [root@a79c528e9105 /]# ping 2000:20:30:d012::1 PING 2000:20:30:d012::1(2000:20:30:d012::1) 56 data bytes 64 bytes from 2000:20:30:d012::1: icmp_seq=1 ttl=64 time=2.86 ms 64 bytes from 2000:20:30:d012::1: icmp_seq=2 ttl=64 time=0.859 ms 64 bytes from 2000:20:30:d012::1: icmp_seq=3 ttl=64 time=1.05 ms 64 bytes from 2000:20:30:d012::1: icmp_seq=4 ttl=64 time=1.03 ms 64 bytes from 2000:20:30:d012::1: icmp_seq=5 ttl=64 time=1.14 ms 64 bytes from 2000:20:30:d012::1: icmp_seq=6 ttl=64 time=0.504 ms 64 bytes from 2000:20:30:d012::1: icmp_seq=7 ttl=64 time=0.779 ms 64 bytes from 2000:20:30:d012::1: icmp_seq=8 ttl=64 time=1.33 ms 64 bytes from 2000:20:30:d012::1: icmp_seq=9 ttl=64 time=0.479 ms 64 bytes from 2000:20:30:d012::1: icmp_seq=10 ttl=64 time=1.37 ms 64 bytes from 2000:20:30:d012::1: icmp_seq=11 ttl=64 time=1.05 ms 64 bytes from 2000:20:30:d012::1: icmp_seq=12 ttl=64 time=1.02 ms 64 bytes from 2000:20:30:d012::1: icmp_seq=13 ttl=64 time=0.769 ms 64 bytes from 2000:20:30:d012::1: icmp_seq=14 ttl=64 time=0.884 ms 64 bytes from 2000:20:30:d012::1: icmp_seq=15 ttl=64 time=0.851 ms 64 bytes from 2000:20:30:d012::1: icmp_seq=16 ttl=64 time=0.564 ms 64 bytes from 2000:20:30:d012::1: icmp_seq=17 ttl=64 time=0.649 ms 64 bytes from 2000:20:30:d012::1: icmp_seq=18 ttl=64 time=1.21 ms 64 bytes from 2000:20:30:d012::1: icmp_seq=19 ttl=64 time=0.957 ms 64 bytes from 2000:20:30:d012::1: icmp_seq=20 ttl=64 time=0.559 ms 64 bytes from 2000:20:30:d012::1: icmp_seq=21 ttl=64 time=0.771 ms 64 bytes from 2000:20:30:d012::1: icmp_seq=22 ttl=64 time=0.568 ms 64 bytes from 2000:20:30:d012::1: icmp_seq=23 ttl=64 time=0.820 ms 64 bytes from 2000:20:30:d012::1: icmp_seq=24 ttl=64 time=1.33 ms 64 bytes from 2000:20:30:d012::1: icmp_seq=25 ttl=64 time=1.10 ms 64 bytes from 2000:20:30:d012::1: icmp_seq=26 ttl=64 time=1.02 ms 64 bytes from 2000:20:30:d012::1: icmp_seq=27 ttl=64 time=0.668 ms 64 bytes from 2000:20:30:d012::1: icmp_seq=28 ttl=64 time=0.690 ms 64 bytes from 2000:20:30:d012::1: icmp_seq=29 ttl=64 time=0.548 ms 64 bytes from 2000:20:30:d012::1: icmp_seq=30 ttl=64 time=1.50 ms 64 bytes from 2000:20:30:d012::1: icmp_seq=31 ttl=64 time=0.599 ms 64 bytes from 2000:20:30:d012::1: icmp_seq=32 ttl=64 time=0.503 ms 64 bytes from 2000:20:30:d012::1: icmp_seq=33 ttl=64 time=1.06 ms 64 bytes from 2000:20:30:d012::1: icmp_seq=34 ttl=64 time=0.909 ms ^C --- 2000:20:30:d012::1 ping statistics --- 34 packets transmitted, 34 received, 0% packet loss, time 33513ms rtt min/avg/max/mdev = 0.479/0.940/2.858/0.431 ms 2nd test Alpine Linux: [root@keadockerpilot ~]# docker run --name kea6 --volume /tmp/kea_test:/etc/kea --net ipvlan0 -it alpine:latest Unable to find image 'alpine:latest' locally latest: Pulling from library/alpine d25f557d7f31: Pull complete Digest: sha256:5f48f60d043e6df88720dea5f954dcf507912368cd84bd08703325fdf269724e Status: Downloaded newer image for alpine:latest / # / # ping 2000:20:30:d012::1 PING 2000:20:30:d012::1 (2000:20:30:d012::1): 56 data bytes 64 bytes from 2000:20:30:d012::1: seq=0 ttl=64 time=3.233 ms 64 bytes from 2000:20:30:d012::1: seq=1 ttl=64 time=1.098 ms 64 bytes from 2000:20:30:d012::1: seq=2 ttl=64 time=1.061 ms 64 bytes from 2000:20:30:d012::1: seq=3 ttl=64 time=1.004 ms 64 bytes from 2000:20:30:d012::1: seq=4 ttl=64 time=1.159 ms 64 bytes from 2000:20:30:d012::1: seq=5 ttl=64 time=0.877 ms 64 bytes from 2000:20:30:d012::1: seq=6 ttl=64 time=0.929 ms 64 bytes from 2000:20:30:d012::1: seq=7 ttl=64 time=1.042 ms 64 bytes from 2000:20:30:d012::1: seq=8 ttl=64 time=0.804 ms 64 bytes from 2000:20:30:d012::1: seq=9 ttl=64 time=0.966 ms 64 bytes from 2000:20:30:d012::1: seq=10 ttl=64 time=0.973 ms 64 bytes from 2000:20:30:d012::1: seq=11 ttl=64 time=1.558 ms 64 bytes from 2000:20:30:d012::1: seq=12 ttl=64 time=0.516 ms 64 bytes from 2000:20:30:d012::1: seq=13 ttl=64 time=0.823 ms 64 bytes from 2000:20:30:d012::1: seq=14 ttl=64 time=1.201 ms 64 bytes from 2000:20:30:d012::1: seq=15 ttl=64 time=1.242 ms 64 bytes from 2000:20:30:d012::1: seq=16 ttl=64 time=0.683 ms 64 bytes from 2000:20:30:d012::1: seq=17 ttl=64 time=0.840 ms 64 bytes from 2000:20:30:d012::1: seq=18 ttl=64 time=1.137 ms 64 bytes from 2000:20:30:d012::1: seq=19 ttl=64 time=0.787 ms 64 bytes from 2000:20:30:d012::1: seq=20 ttl=64 time=0.535 ms 64 bytes from 2000:20:30:d012::1: seq=21 ttl=64 time=0.647 ms 64 bytes from 2000:20:30:d012::1: seq=22 ttl=64 time=1.215 ms 64 bytes from 2000:20:30:d012::1: seq=23 ttl=64 time=1.143 ms 64 bytes from 2000:20:30:d012::1: seq=24 ttl=64 time=0.769 ms 64 bytes from 2000:20:30:d012::1: seq=25 ttl=64 time=0.740 ms 64 bytes from 2000:20:30:d012::1: seq=26 ttl=64 time=0.997 ms 64 bytes from 2000:20:30:d012::1: seq=27 ttl=64 time=1.172 ms 64 bytes from 2000:20:30:d012::1: seq=28 ttl=64 time=1.278 ms 64 bytes from 2000:20:30:d012::1: seq=29 ttl=64 time=0.628 ms 64 bytes from 2000:20:30:d012::1: seq=30 ttl=64 time=0.708 ms 64 bytes from 2000:20:30:d012::1: seq=31 ttl=64 time=0.572 ms 64 bytes from 2000:20:30:d012::1: seq=32 ttl=64 time=0.899 ms 64 bytes from 2000:20:30:d012::1: seq=33 ttl=64 time=0.607 ms 64 bytes from 2000:20:30:d012::1: seq=34 ttl=64 time=1.161 ms 64 bytes from 2000:20:30:d012::1: seq=35 ttl=64 time=0.573 ms 64 bytes from 2000:20:30:d012::1: seq=36 ttl=64 time=1.237 ms 64 bytes from 2000:20:30:d012::1: seq=37 ttl=64 time=0.545 ms 64 bytes from 2000:20:30:d012::1: seq=38 ttl=64 time=0.685 ms 64 bytes from 2000:20:30:d012::1: seq=39 ttl=64 time=1.249 ms 64 bytes from 2000:20:30:d012::1: seq=40 ttl=64 time=1.632 ms 64 bytes from 2000:20:30:d012::1: seq=41 ttl=64 time=0.567 ms 64 bytes from 2000:20:30:d012::1: seq=42 ttl=64 time=0.541 ms 64 bytes from 2000:20:30:d012::1: seq=43 ttl=64 time=0.756 ms 64 bytes from 2000:20:30:d012::1: seq=44 ttl=64 time=0.916 ms 64 bytes from 2000:20:30:d012::1: seq=45 ttl=64 time=0.602 ms 64 bytes from 2000:20:30:d012::1: seq=46 ttl=64 time=1.234 ms 64 bytes from 2000:20:30:d012::1: seq=47 ttl=64 time=1.488 ms 64 bytes from 2000:20:30:d012::1: seq=48 ttl=64 time=0.863 ms 64 bytes from 2000:20:30:d012::1: seq=49 ttl=64 time=1.292 ms 64 bytes from 2000:20:30:d012::1: seq=50 ttl=64 time=1.098 ms 64 bytes from 2000:20:30:d012::1: seq=51 ttl=64 time=2.082 ms 64 bytes from 2000:20:30:d012::1: seq=52 ttl=64 time=0.754 ms 64 bytes from 2000:20:30:d012::1: seq=53 ttl=64 time=1.141 ms 64 bytes from 2000:20:30:d012::1: seq=54 ttl=64 time=0.744 ms 64 bytes from 2000:20:30:d012::1: seq=55 ttl=64 time=0.870 ms 64 bytes from 2000:20:30:d012::1: seq=56 ttl=64 time=1.166 ms 64 bytes from 2000:20:30:d012::1: seq=57 ttl=64 time=1.045 ms 64 bytes from 2000:20:30:d012::1: seq=58 ttl=64 time=1.132 ms 64 bytes from 2000:20:30:d012::1: seq=59 ttl=64 time=0.542 ms 64 bytes from 2000:20:30:d012::1: seq=60 ttl=64 time=0.559 ms 64 bytes from 2000:20:30:d012::1: seq=61 ttl=64 time=0.988 ms 64 bytes from 2000:20:30:d012::1: seq=62 ttl=64 time=0.940 ms 64 bytes from 2000:20:30:d012::1: seq=63 ttl=64 time=1.021 ms 64 bytes from 2000:20:30:d012::1: seq=64 ttl=64 time=1.006 ms 64 bytes from 2000:20:30:d012::1: seq=65 ttl=64 time=0.739 ms 64 bytes from 2000:20:30:d012::1: seq=66 ttl=64 time=0.893 ms 64 bytes from 2000:20:30:d012::1: seq=67 ttl=64 time=0.952 ms 64 bytes from 2000:20:30:d012::1: seq=68 ttl=64 time=0.893 ms 64 bytes from 2000:20:30:d012::1: seq=69 ttl=64 time=0.966 ms 64 bytes from 2000:20:30:d012::1: seq=70 ttl=64 time=1.546 ms 64 bytes from 2000:20:30:d012::1: seq=71 ttl=64 time=0.746 ms 64 bytes from 2000:20:30:d012::1: seq=72 ttl=64 time=1.259 ms 64 bytes from 2000:20:30:d012::1: seq=73 ttl=64 time=1.545 ms 64 bytes from 2000:20:30:d012::1: seq=74 ttl=64 time=1.326 ms 64 bytes from 2000:20:30:d012::1: seq=75 ttl=64 time=1.144 ms 64 bytes from 2000:20:30:d012::1: seq=76 ttl=64 time=0.912 ms 64 bytes from 2000:20:30:d012::1: seq=77 ttl=64 time=0.713 ms 64 bytes from 2000:20:30:d012::1: seq=78 ttl=64 time=1.189 ms 64 bytes from 2000:20:30:d012::1: seq=79 ttl=64 time=1.238 ms 64 bytes from 2000:20:30:d012::1: seq=80 ttl=64 time=3.970 ms 64 bytes from 2000:20:30:d012::1: seq=81 ttl=64 time=0.821 ms 64 bytes from 2000:20:30:d012::1: seq=82 ttl=64 time=1.232 ms 64 bytes from 2000:20:30:d012::1: seq=83 ttl=64 time=1.041 ms 64 bytes from 2000:20:30:d012::1: seq=84 ttl=64 time=0.641 ms 64 bytes from 2000:20:30:d012::1: seq=85 ttl=64 time=0.780 ms 64 bytes from 2000:20:30:d012::1: seq=86 ttl=64 time=0.907 ms 64 bytes from 2000:20:30:d012::1: seq=87 ttl=64 time=0.727 ms 64 bytes from 2000:20:30:d012::1: seq=88 ttl=64 time=1.063 ms 64 bytes from 2000:20:30:d012::1: seq=89 ttl=64 time=1.128 ms 64 bytes from 2000:20:30:d012::1: seq=90 ttl=64 time=0.515 ms 64 bytes from 2000:20:30:d012::1: seq=91 ttl=64 time=0.548 ms 64 bytes from 2000:20:30:d012::1: seq=92 ttl=64 time=0.466 ms 64 bytes from 2000:20:30:d012::1: seq=93 ttl=64 time=0.614 ms 64 bytes from 2000:20:30:d012::1: seq=94 ttl=64 time=1.079 ms 64 bytes from 2000:20:30:d012::1: seq=95 ttl=64 time=1.099 ms 64 bytes from 2000:20:30:d012::1: seq=96 ttl=64 time=1.027 ms 64 bytes from 2000:20:30:d012::1: seq=97 ttl=64 time=0.656 ms 64 bytes from 2000:20:30:d012::1: seq=98 ttl=64 time=0.796 ms 64 bytes from 2000:20:30:d012::1: seq=99 ttl=64 time=1.443 ms 64 bytes from 2000:20:30:d012::1: seq=100 ttl=64 time=1.106 ms 64 bytes from 2000:20:30:d012::1: seq=101 ttl=64 time=0.587 ms 64 bytes from 2000:20:30:d012::1: seq=102 ttl=64 time=1.438 ms 64 bytes from 2000:20:30:d012::1: seq=103 ttl=64 time=0.561 ms 64 bytes from 2000:20:30:d012::1: seq=104 ttl=64 time=1.124 ms ^C --- 2000:20:30:d012::1 ping statistics --- 105 packets transmitted, 105 packets received, 0% packet loss round-trip min/avg/max = 0.466/1.006/3.970 ms / # 3rd test 2.4.1 kea: [root@keadockerpilot ~]# docker run --name kea6 --volume /tmp/kea_test:/etc/kea --net ipvlan0 -it docker.cloudsmith.io/isc/docker/kea-dhcp6:2.4.1 [root@keadockerpilot ~]# [root@keadockerpilot ~]# docker exec -it kea6 /bin/sh / # / # / # ping 2000:20:30:d012::1 PING 2000:20:30:d012::1 (2000:20:30:d012::1): 56 data bytes 64 bytes from 2000:20:30:d012::1: seq=0 ttl=64 time=1.162 ms 64 bytes from 2000:20:30:d012::1: seq=1 ttl=64 time=1.558 ms 64 bytes from 2000:20:30:d012::1: seq=2 ttl=64 time=0.977 ms 64 bytes from 2000:20:30:d012::1: seq=3 ttl=64 time=1.105 ms 64 bytes from 2000:20:30:d012::1: seq=4 ttl=64 time=1.177 ms 64 bytes from 2000:20:30:d012::1: seq=5 ttl=64 time=0.743 ms 64 bytes from 2000:20:30:d012::1: seq=6 ttl=64 time=0.684 ms 64 bytes from 2000:20:30:d012::1: seq=7 ttl=64 time=0.520 ms 64 bytes from 2000:20:30:d012::1: seq=8 ttl=64 time=1.088 ms 64 bytes from 2000:20:30:d012::1: seq=9 ttl=64 time=1.038 ms 64 bytes from 2000:20:30:d012::1: seq=10 ttl=64 time=0.605 ms 64 bytes from 2000:20:30:d012::1: seq=11 ttl=64 time=0.759 ms 64 bytes from 2000:20:30:d012::1: seq=12 ttl=64 time=1.499 ms 64 bytes from 2000:20:30:d012::1: seq=13 ttl=64 time=1.402 ms 64 bytes from 2000:20:30:d012::1: seq=14 ttl=64 time=1.159 ms 64 bytes from 2000:20:30:d012::1: seq=15 ttl=64 time=0.959 ms 64 bytes from 2000:20:30:d012::1: seq=16 ttl=64 time=1.552 ms 64 bytes from 2000:20:30:d012::1: seq=17 ttl=64 time=0.650 ms 64 bytes from 2000:20:30:d012::1: seq=18 ttl=64 time=0.573 ms 64 bytes from 2000:20:30:d012::1: seq=19 ttl=64 time=0.769 ms 64 bytes from 2000:20:30:d012::1: seq=20 ttl=64 time=1.062 ms 64 bytes from 2000:20:30:d012::1: seq=21 ttl=64 time=0.718 ms 64 bytes from 2000:20:30:d012::1: seq=22 ttl=64 time=1.125 ms 64 bytes from 2000:20:30:d012::1: seq=23 ttl=64 time=1.150 ms 64 bytes from 2000:20:30:d012::1: seq=24 ttl=64 time=0.452 ms 64 bytes from 2000:20:30:d012::1: seq=25 ttl=64 time=0.626 ms 64 bytes from 2000:20:30:d012::1: seq=26 ttl=64 time=0.552 ms 64 bytes from 2000:20:30:d012::1: seq=27 ttl=64 time=1.405 ms 64 bytes from 2000:20:30:d012::1: seq=28 ttl=64 time=1.316 ms 64 bytes from 2000:20:30:d012::1: seq=29 ttl=64 time=0.840 ms 64 bytes from 2000:20:30:d012::1: seq=30 ttl=64 time=10.905 ms 64 bytes from 2000:20:30:d012::1: seq=31 ttl=64 time=0.773 ms 64 bytes from 2000:20:30:d012::1: seq=32 ttl=64 time=0.771 ms 64 bytes from 2000:20:30:d012::1: seq=33 ttl=64 time=1.341 ms 64 bytes from 2000:20:30:d012::1: seq=34 ttl=64 time=0.722 ms 64 bytes from 2000:20:30:d012::1: seq=35 ttl=64 time=1.235 ms 64 bytes from 2000:20:30:d012::1: seq=36 ttl=64 time=0.648 ms 64 bytes from 2000:20:30:d012::1: seq=37 ttl=64 time=1.380 ms 64 bytes from 2000:20:30:d012::1: seq=38 ttl=64 time=0.754 ms 64 bytes from 2000:20:30:d012::1: seq=39 ttl=64 time=1.157 ms 64 bytes from 2000:20:30:d012::1: seq=40 ttl=64 time=1.374 ms 64 bytes from 2000:20:30:d012::1: seq=41 ttl=64 time=1.293 ms 64 bytes from 2000:20:30:d012::1: seq=42 ttl=64 time=0.665 ms 64 bytes from 2000:20:30:d012::1: seq=43 ttl=64 time=1.014 ms 64 bytes from 2000:20:30:d012::1: seq=44 ttl=64 time=1.093 ms 64 bytes from 2000:20:30:d012::1: seq=45 ttl=64 time=0.767 ms 64 bytes from 2000:20:30:d012::1: seq=46 ttl=64 time=0.563 ms 64 bytes from 2000:20:30:d012::1: seq=47 ttl=64 time=0.871 ms 64 bytes from 2000:20:30:d012::1: seq=48 ttl=64 time=0.764 ms 64 bytes from 2000:20:30:d012::1: seq=49 ttl=64 time=0.970 ms 64 bytes from 2000:20:30:d012::1: seq=50 ttl=64 time=0.795 ms 64 bytes from 2000:20:30:d012::1: seq=51 ttl=64 time=1.173 ms 64 bytes from 2000:20:30:d012::1: seq=52 ttl=64 time=0.831 ms 64 bytes from 2000:20:30:d012::1: seq=53 ttl=64 time=0.949 ms 64 bytes from 2000:20:30:d012::1: seq=54 ttl=64 time=0.476 ms 64 bytes from 2000:20:30:d012::1: seq=55 ttl=64 time=0.454 ms 64 bytes from 2000:20:30:d012::1: seq=56 ttl=64 time=0.813 ms 64 bytes from 2000:20:30:d012::1: seq=57 ttl=64 time=1.202 ms 64 bytes from 2000:20:30:d012::1: seq=58 ttl=64 time=1.133 ms 64 bytes from 2000:20:30:d012::1: seq=59 ttl=64 time=0.782 ms 64 bytes from 2000:20:30:d012::1: seq=60 ttl=64 time=1.298 ms 64 bytes from 2000:20:30:d012::1: seq=61 ttl=64 time=0.673 ms 64 bytes from 2000:20:30:d012::1: seq=62 ttl=64 time=0.699 ms 64 bytes from 2000:20:30:d012::1: seq=63 ttl=64 time=0.488 ms 64 bytes from 2000:20:30:d012::1: seq=64 ttl=64 time=0.849 ms 64 bytes from 2000:20:30:d012::1: seq=65 ttl=64 time=0.836 ms ^C --- 2000:20:30:d012::1 ping statistics --- 66 packets transmitted, 66 packets received, 0% packet loss round-trip min/avg/max = 0.452/1.086/10.905 ms 4th test 2.6.0 kea: [root@keadockerpilot ~]# docker run --name kea6_260 --volume /tmp/kea_test:/etc/kea --net ipvlan0 -it docker.cloudsmith.io/isc/docker/kea-dhcp6:2.6.0 [root@keadockerpilot ~]# docker exec -it kea6_260 /bin/sh / # ping 2000:20:30:d012::1 PING 2000:20:30:d012::1 (2000:20:30:d012::1): 56 data bytes 64 bytes from 2000:20:30:d012::1: seq=1 ttl=64 time=1.179 ms 64 bytes from 2000:20:30:d012::1: seq=2 ttl=64 time=0.840 ms 64 bytes from 2000:20:30:d012::1: seq=3 ttl=64 time=0.699 ms 64 bytes from 2000:20:30:d012::1: seq=4 ttl=64 time=1.087 ms 64 bytes from 2000:20:30:d012::1: seq=5 ttl=64 time=0.772 ms 64 bytes from 2000:20:30:d012::1: seq=6 ttl=64 time=0.555 ms 64 bytes from 2000:20:30:d012::1: seq=7 ttl=64 time=0.848 ms 64 bytes from 2000:20:30:d012::1: seq=8 ttl=64 time=0.655 ms 64 bytes from 2000:20:30:d012::1: seq=9 ttl=64 time=1.112 ms 64 bytes from 2000:20:30:d012::1: seq=10 ttl=64 time=0.719 ms 64 bytes from 2000:20:30:d012::1: seq=11 ttl=64 time=1.151 ms 64 bytes from 2000:20:30:d012::1: seq=12 ttl=64 time=0.557 ms 64 bytes from 2000:20:30:d012::1: seq=13 ttl=64 time=0.617 ms 64 bytes from 2000:20:30:d012::1: seq=14 ttl=64 time=0.957 ms 64 bytes from 2000:20:30:d012::1: seq=15 ttl=64 time=0.837 ms 64 bytes from 2000:20:30:d012::1: seq=16 ttl=64 time=1.247 ms 64 bytes from 2000:20:30:d012::1: seq=17 ttl=64 time=0.617 ms 64 bytes from 2000:20:30:d012::1: seq=18 ttl=64 time=0.758 ms 64 bytes from 2000:20:30:d012::1: seq=19 ttl=64 time=0.995 ms 64 bytes from 2000:20:30:d012::1: seq=20 ttl=64 time=0.665 ms ^C --- 2000:20:30:d012::1 ping statistics --- 21 packets transmitted, 20 packets received, 4% packet loss round-trip min/avg/max = 0.555/0.843/1.247 ms Best Regards, Yu
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