Network

Anonymized IPs in nginx Access Log

If you want to reduce your nginx logs to non-personalized resp. anonymized client addresses, you may apply the following method, running a slightly changed log format after setting a new variable $remote_addr_anon.

NetworkManager DNS

By relaying DNS queries to local dnsmasq instances, debugging DNS servers in newer Ubuntu releases is no longer strictly file-based.

Ubuntu Upgrade over IPv6

Even if there are already IPv6-enabled mirrors, that help to maintain an IPv6-only Ubuntu installation, it’s a little tricky to apply a release upgrade.

policyd-weight IN_IPv6_RBL=4.25

Watch out for any IN_IPv6_RBL scores in your policyd-weight logs.

If you see regular hits, you probably have to either upgrade your policyd-weight or disable rbl.ipv6world.net manually.