From 782727bc449c11ac46207cfbcf67edc038123db2 Mon Sep 17 00:00:00 2001
From: Benjamin Toby <devops@tben.me>
Date: Tue, 22 Sep 2026 13:35:53 +0100
Subject: [PATCH] Iptables bugfix: add space between -i flag and interface name

---
 src/functions/backend/setup/build-host-iptables-scripts.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/functions/backend/setup/build-host-iptables-scripts.ts b/src/functions/backend/setup/build-host-iptables-scripts.ts
index 000e699..2e1592c 100644
--- a/src/functions/backend/setup/build-host-iptables-scripts.ts
+++ b/src/functions/backend/setup/build-host-iptables-scripts.ts
@@ -268,8 +268,8 @@ export default function buildHostIptablesScripts({
         `iptables -A ${forward} -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT`,
         `iptables -A ${input} -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT`,
         ``,
-        `iptables -A ${input} -i${interface_name} -p udp --dport 53 -j ACCEPT`,
-        `iptables -A ${input} -i${interface_name} -p tcp --dport 53 -j ACCEPT`,
+        `iptables -A ${input} -i ${interface_name} -p udp --dport 53 -j ACCEPT`,
+        `iptables -A ${input} -i ${interface_name} -p tcp --dport 53 -j ACCEPT`,
         ``,
         ...accept_lines,
         ``,