How to completely disable IPv6 for SOHO

[lleachii]

I just searched for a previous thread on something odd about IPv6. Be careful of "disabling" IPv6 - it may still be running on devices.

It's becoming ubiquitous.

NTP, I'm doing something wrong

First, NTP is UDP, not TCP. This explains why some of your tests ended up in no responses. Next: I have the same behavior, I haven't noticed a change since version 19 or 20. On a client: ntpdate -q 192.168.1.1 This works for me, which made me wonder why. The answer is IPv4-mapped IPv6 addresses. See: https://lwn.net/Articles/688462/ https://unix.stackexchange.com/questions/152612/netstat-why-are-ipv4-daemons-listening-to-ports-listed-only-in-a-inet6 root@OpenWrt:~# sysctl net.ipv6.bin…