diff --git a/hosts/carbon/ppp.nix b/hosts/carbon/ppp.nix
index 7502205..55c1e93 100644
--- a/hosts/carbon/ppp.nix
+++ b/hosts/carbon/ppp.nix
@@ -76,4 +76,13 @@
     '';
   };
 
+  environment.etc."ppp/ipv6-up" = {
+    text = ''
+      #!${pkgs.runtimeShell}
+
+      set -euo pipefail
+
+      ${pkgs.dhcpcd}/bin/dhcpcd --renew $1
+    '';
+  };
 }