Fonte: https://cwesystems.com/?p=231I had connection problems with my Raspberry Pi, it dropped connection over IPv4 periodically.My solution was to disable IPv6, and the Pi’s network connections (over IPv4) went stable!To check if you have any IPv6 address, run:1$ ifconfigCheck for “inet6”, see picture above.To disable IPv6:Edit “/etc/sysctl.conf”:$ sudo nano /etc/sysctl.confAdd this to the end:1234net.ipv6.conf.all.disable_ipv6=1net.ipv6.conf.default.disable_ipv6=1net.ipv6.conf.lo.disable_ipv6=1net.ipv6.conf.eth0.disable_ipv6 ...