diff --git a/ops/nixos/marukuru/default.nix b/ops/nixos/marukuru/default.nix
index 4b3ec6a136..a59365c0c3 100644
--- a/ops/nixos/marukuru/default.nix
+++ b/ops/nixos/marukuru/default.nix
@@ -14,6 +14,7 @@ in {
   boot.kernel.sysctl = {
     "net.ipv6.conf.default.accept_ra" = 2;
     "net.ipv6.conf.all.accept_ra" = 2;
+    "net.ipv6.conf.eth0.accept_ra" = 2;
   };
 
   fileSystems = {