Hello, Philip, Today I connected the probe to IPv6 network. Below is what happened: 1. After boot probe got IPv6 address 2a01:5a8:2:5:6666:b3ff:fec5:fa6. 2. I did a traffic capture and saw the probe connected to 2001:67c:2e8:11::c100:1319 (woolsey.ipv6.atlas.ripe.net) and there was a short communication via SSL. 3. Then the probe became silent. I waited ten minutes and plugged a new USB stick however the probe did not try to connect ATLAS infrastructure anymore. Note: The router assigns recursive DNS servers (2001:4860:4860::8888 2001:4860:4860::8844) via ICMP6 Option 25 in Router Advertisement messages. I have also tried to assign DNS servers via the RIPE Probe Management Web Interface but no difference, Thank You Stanish Sent via RIPE Forum -- https://www.ripe.net/participate/mail/forum