Reverse DNS delegation is not working for my (probably all) routes on nlhaa01: Subnet R8786: 2001:1af8:fe31::/48 Subnet R243857: 2001:1af8:ff40::/48 Tracing DNS delegation for "1.3.e.f.8.f.a.1.1.0.0.2.ip6.arpa": Loading root server list (static data): -> a.root-servers.net (198.41.0.4) -> b.root-servers.net (192.228.79.201) -> c.root-servers.net (192.33.4.12) -> d.root-servers.net (128.8.10.90) -> e.root-servers.net (192.203.230.10) -> f.root-servers.net (192.5.5.241) -> g.root-servers.net (192.112.36.4) -> h.root-servers.net (128.63.2.53) -> i.root-servers.net (192.36.148.17) -> j.root-servers.net (192.58.128.30) -> k.root-servers.net (193.0.14.129) -> l.root-servers.net (199.7.83.42) -> m.root-servers.net (202.12.27.33) Sending request to "k.root-servers.net" (193.0.14.129) Received referral response - DNS servers for "ip6.arpa": -> a.ip6-servers.arpa (199.212.0.73) -> b.ip6-servers.arpa (199.253.182.182) -> c.ip6-servers.arpa (196.216.169.11) -> d.ip6-servers.arpa (200.7.86.53) -> e.ip6-servers.arpa (202.12.29.59) -> f.ip6-servers.arpa (193.0.9.2) Sending request to "c.ip6-servers.arpa" (196.216.169.11) Received referral response - DNS servers for "a.1.1.0.0.2.ip6.arpa": -> ns3.nic.fr (no IP address) -> pri.authdns.ripe.net (no IP address) -> sec1.apnic.net (no IP address) -> sec3.apnic.net (no IP address) -> sns-pb.isc.org (no IP address) -> tinnie.arin.net (no IP address) Attempting to resolve DNS server name "tinnie.arin.net" (details not logged) Resolved DNS server name "tinnie.arin.net" to IP address 199.212.0.53 Sending request to "tinnie.arin.net" (199.212.0.53) Received referral response - DNS servers for "8.f.a.1.1.0.0.2.ip6.arpa": -> ns6.leaseweb.net (no IP address) -> ns8.leaseweb.net (no IP address) Attempting to resolve DNS server name "ns6.leaseweb.net" (details not logged) Resolved DNS server name "ns6.leaseweb.net" to IP address 85.17.128.55 Sending request to "ns6.leaseweb.net" (85.17.128.55) Received authoritative (AA) response: -> Header: Non-Existent Domain