diff --git a/roles/proxmox-backup/templates/nftables.conf.j2 b/roles/proxmox-backup/templates/nftables.conf.j2
index aff70a9..eed9e44 100644
--- a/roles/proxmox-backup/templates/nftables.conf.j2
+++ b/roles/proxmox-backup/templates/nftables.conf.j2
@@ -19,6 +19,10 @@ table inet filter {
             packet-too-big, parameter-problem, time-exceeded,
         } accept comment "accept some ICMPv6"
 
+        iif mgmt0 ip6 hoplimit 255 ip6 nexthdr icmpv6 icmpv6 type {
+            nd-neighbor-advert, nd-neighbor-solicit, nd-router-advert
+        } accept comment "accept IPv6 neighbor discovery"
+
         # BGP / BFD sessions
         iif lan0 ip6 saddr fe80::/64 accept
         iif lan1 ip6 saddr fe80::/64 accept