Doesn't solve the 5-6 seconds delay to start a ping problem. DNS settings are to use my router (192.168.0.1) as DNS server. Switchting to 8.8.8.8 oder 1.1.1.1 does not change anything. Ironically all my VMs running on that machine work perfectly fine. Only unraid itself has this massive delay in DNS resolution. Whats going on here. Stopping avahi no help. Removing /etc/resolv.conf and removing /boot/config/network.cfg, rebooting, resetting network. All of that no help.
telnet 8.8.8.8 53 works perfectly as it should. Pings (when they start after that 5-6 seconds delay) run at 5-7ms to google. Perfect. Bandwith test: 980mbit download, 510mbit upload (fiber ftth germany) works great. Having this problem for several weeks now. Anyone has an idea what to try next?