I just use ipv4 in my network. it's my personal network (and my personal opinion/solution). I turn off ipv6. I don't want to maintain two sets of firewall ru

I just use ipv4 in my network. it's my personal network (and my personal opinion/solution). I turn off ipv6. I don't want to maintain two sets of firewall rules, or have some weird routing problem that lets packets in or out. I add this to my linux kernel command line: ipv6.disable=1 ipv6.ipv6_disable=1 sometimes in /etc/sysctl.d/00-nov6.conf: net.ipv6.conf.all.disable_ipv6=1 net.ipv6.conf.default.disable_ipv6=1 in macos I do: networksetup -setv6off 'Ethernet 1' (or whatever network interface) helps me be more organized.