From 7b741d3e4b8aca350c4cc45966ae055277fa8a70 Mon Sep 17 00:00:00 2001
From: Kroese <kroese@users.noreply.github.com>
Date: Sun, 12 Jul 2026 22:14:11 +0200
Subject: [PATCH] feat: Warn about UDP host ports (#1250)

---
 src/network.sh | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/network.sh b/src/network.sh
index ff07d01..c31d72c 100644
--- a/src/network.sh
+++ b/src/network.sh
@@ -1249,6 +1249,15 @@ validateHost() {
   return 0
 }
 
+validateHostPorts() {
+
+  if isNAT && [[ "${HOST_PORTS,,}" == *"/udp"* ]]; then
+    warn "UDP ports in \"HOST_PORTS\" are not yet implemented for NAT networking."
+  fi
+
+  return 0
+}
+
 validateAddresses() {
 
   # DHCP/macvtap mode can work without a detectable container IPv4 address,
@@ -1501,6 +1510,7 @@ prepareNetwork() {
 
   validateMask
   validateHost
+  validateHostPorts
 
   detectAddresses
   validateAddresses