Hi, I'm Vasile Pais from INFLPR (National Institute for Laser, Plasma and Radiation Physics) in Romania. My sixxs id is PVF1-SIXXS. Recently we requested a subnet wich was approved and enabled (2001:15c0:6667::/48). This subnet was working fine last week. However, from this morning it doesn't seem to be working. This caused the workstations on this subnet to lose connectivity with IPV6 sites. Performing an IPV6 traceroute, using your traceroute page (https://noc.sixxs.net/tools/traceroute/), shows a problem at 2001:15c0:ffff:7::2. Hop Node Loss% Sent Last Avg Best Worst StDev ASN Organisation 1. 2001:6a8:3c80::2 0.0% 5 0.6 0.5 0.4 0.6 0.1 2611 BELNET ge.m20-2.access.science.belnet.net. 2. 2001:6a8:0:c00e::1 0.0% 5 0.7 0.7 0.7 0.8 0.0 2611 BELNET oc48.m160.core.brussels.belnet.net. 3. 2001:6a8:0:4003::2 0.0% 5 0.7 0.7 0.7 0.8 0.0 2611 BELNET oc48.m160.ext.science.belnet.net. 4. 2001:798:22:10aa::5 0.0% 5 4.2 4.2 4.1 4.2 0.0 20965 Dante belnet.rt1.ams.nl.geant2.net. 5. 2001:798:cc:1501:2201::1 0.0% 5 17.0 17.1 17.0 17.1 0.0 20965 Dante so-7-0-0.rt1.cop.dk.geant2.net. 6. 2001:1900:5:2::1 0.0% 5 39.6 52.4 39.6 103.6 28.6 Level 3 Communications, Inc. 7. 2001:1900:5:2::22 0.0% 5 52.6 53.2 52.6 54.2 0.7 Level 3 Communications, Inc. 8. 2001:890:600:8002::8591 0.0% 5 63.9 64.2 63.9 64.4 0.2 8447 Telekom 9. 2001:15c0:ffff:7::2 0.0% 5 64.5 65.0 63.9 66.0 0.9 8591 Medinet d.o.o. gold.inlimbo.org. ........... 30. 2001:15c0:ffff:7::2 20.0% 5 64.6 64.6 64.4 65.0 0.2 8591 Medinet d.o.o. gold.inlimbo.org. This is also confirmed by using tcpdump on our server that shows no packets arriving on the sixxs interface for our subnet. I've also tried starting and stopping aiccu, but with no success. Connectivity is available from my endpoint address 2001:15c0:65ff:ec::2, but not from the subnet addresses. Thank you and Best regards, Vasile