A similar bug happened here on 2 different Ubuntu installs once they upgraded to Ubuntu 18.10.
Another symptom of the bug was periodic addition of IPv6 addresses to the `ip addr` listing. If you wait a while, the list had thousands of IPv6 entries in it!
Apparently every time it decided to fetch new IPv6 addresses it also did a RST on all the IPv4 connections, which is why webpages fail to load a lot of the time.
Once I completely disabled IPv6 support on my machine via:
A similar bug happened here on 2 different Ubuntu installs once they upgraded to Ubuntu 18.10.
Another symptom of the bug was periodic addition of IPv6 addresses to the `ip addr` listing. If you wait a while, the list had thousands of IPv6 entries in it!
Apparently every time it decided to fetch new IPv6 addresses it also did a RST on all the IPv4 connections, which is why webpages fail to load a lot of the time.
Once I completely disabled IPv6 support on my machine via:
/etc/sysctl. d/99-sysctl. conf:net. ipv6.conf. all.disable_ ipv6 = 1 d/99-sysctl. conf:net. ipv6.conf. default. disable_ ipv6 = 1 d/99-sysctl. conf:net. ipv6.conf. lo.disable_ ipv6 = 1
/etc/sysctl.
/etc/sysctl.
The problem went away.
So I don't know what the exact problem is -- but this narrows it down.