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max-232

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    Utrecht, the Netherlands
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    Cluster computing, Micro Services, Docker, Kubernetes, ARM devices, Java, electronics
  1. Good to know, let's ignore that part. Browsing to the topics I did find one other topic: impossible-to-disable-ipv6 This talks about the same issue but for a secondary ethernet port. With nmtui-edit -> edit -> IPv6 Configuration, set 'Automatic' to 'Ignore' I did finally disable IPv6 permanently. This solves my problem but I'm still wondering what the IPv6 setting in armbian-config is supposed to do and if it is working correctly.
  2. max-232

    max-232

  3. It does. Here is a console output right after a reboot. As you can see the sysctl.conf persisted however I still have a IPv6 address. But, what I forgot to mention, is that the configuration is applied after running the 'sudo sysctl -p' command. root@NanoPiNeo2:~# cat /etc/sysctl.conf [...] vm.swappiness=100 net.ipv6.conf.all.disable_ipv6 = 1 net.ipv6.conf.default.disable_ipv6 = 1 net.ipv6.conf.lo.disable_ipv6 = 1 root@NanoPiNeo2:~# ip a 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000 link/ether 02:01:5b:46:21:95 brd ff:ff:ff:ff:ff:ff inet 192.168.1.102/24 brd 192.168.1.255 scope global dynamic noprefixroute eth0 valid_lft 86152sec preferred_lft 86152sec inet6 fd68:a057:2b71:1:78cc:3d8e:4a3a:347a/64 scope global temporary dynamic valid_lft 7121sec preferred_lft 7121sec inet6 fd68:a057:2b71:1:a203:3b39:51e7:9a7f/64 scope global dynamic mngtmpaddr noprefixroute valid_lft 7121sec preferred_lft 7121sec inet6 fe80::a711:5254:f436:6b24/64 scope link noprefixroute valid_lft forever preferred_lft forever root@NanoPiNeo2:~# sudo sysctl -p vm.swappiness = 100 net.ipv6.conf.all.disable_ipv6 = 1 net.ipv6.conf.default.disable_ipv6 = 1 net.ipv6.conf.lo.disable_ipv6 = 1 root@NanoPiNeo2:~# ip a 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000 link/ether 02:01:5b:46:21:95 brd ff:ff:ff:ff:ff:ff inet 192.168.1.102/24 brd 192.168.1.255 scope global dynamic noprefixroute eth0 valid_lft 86135sec preferred_lft 86135sec So maybe the actual problem is that the sysctl.conf isn't being loaded on startup. And/or '/etc/rc.local' is ignored.
  4. I'm trying to disable IPv6 on my NanoPi Neo2. Initially I used the option in armbian-config -> Network -> IPv6 (toggle). I can confirm that IPv6 is disabled by running 'ip a' and no longer seeing any IPv6 addresses. And I can also confirm that the following config is changed in /etc/sysctl.conf: net.ipv6.conf.all.disable_ipv6 = 1 net.ipv6.conf.default.disable_ipv6 = 1 net.ipv6.conf.lo.disable_ipv6 = 1 However after a reboot I see the IPv6 addresses back. I found a guide (itsfoss) that suggest the same changes to sysctl.conf and if the changes do not persist ander a startup I should make edit /etc/rc.local : #!/bin/bash # /etc/rc.local /etc/sysctl.d /etc/init.d/procps restart exit 0 However that didn't seem to help. Looking in the forums I came across one topic which is marked solved however I think the author might have had the same issue (how-can-i-disable-ipv6-or-use-temporary-addresses-regular-methods-dont-work-solved) Does anyone else have this issue and know how to solve it? Thanks and happy new year!
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