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Diffstat (limited to 'nixos/modules/services/networking/ndppd.nix')
-rw-r--r--nixos/modules/services/networking/ndppd.nix2
1 files changed, 1 insertions, 1 deletions
diff --git a/nixos/modules/services/networking/ndppd.nix b/nixos/modules/services/networking/ndppd.nix
index 98c58d2d5db1b..d221c95ae6200 100644
--- a/nixos/modules/services/networking/ndppd.nix
+++ b/nixos/modules/services/networking/ndppd.nix
@@ -17,7 +17,7 @@ let
       ttl ${toString proxy.ttl}
       ${render proxy.rules (ruleNetworkName: rule: ''
       rule ${prefer rule.network ruleNetworkName} {
-        ${rule.method}${if rule.method == "iface" then " ${rule.interface}" else ""}
+        ${rule.method}${optionalString (rule.method == "iface") " ${rule.interface}"}
       }'')}
     }'')}
   '');