diff --git a/hosts/skydick/default.nix b/hosts/skydick/default.nix
index fb3688f..d454df4 100644
--- a/hosts/skydick/default.nix
+++ b/hosts/skydick/default.nix
@@ -92,6 +92,11 @@
         prefixLength = 16;
       }];
       mtu = 9200;
+      # Disable IPv6 privacy/temporary addresses: NixOS otherwise emits
+      # net.ipv6.conf.bond40g.use_tempaddr=2, which makes the kernel generate
+      # and prefer a rotating temporary address over the stable ::d1c0 token.
+      # A storage server wants a fixed source address (ACLs, logging, rDNS).
+      tempAddress = "disabled";
     };
 
     defaultGateway = {