From 8b72851f0fdc7f98f0fdb4e6a312f5752a798d67 Mon Sep 17 00:00:00 2001
From: Viacheslav Hletenko <v.gletenko@vyos.io>
Date: Tue, 13 Feb 2024 16:10:48 +0000
Subject: T5064: Firewall fix RegEx for for domain-group

Improve RegEx for firewall domain-groups.
This domain group looks good, but the current RegEx validation
fils:

```
set firewall group domain-group a_aa
```

(cherry picked from commit b67049edab41e8714aec087b81d589fdb03a350b)
---
 interface-definitions/firewall.xml.in | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/interface-definitions/firewall.xml.in b/interface-definitions/firewall.xml.in
index 662ba24ab..51c6f0e21 100644
--- a/interface-definitions/firewall.xml.in
+++ b/interface-definitions/firewall.xml.in
@@ -94,7 +94,7 @@
             <properties>
               <help>Firewall domain-group</help>
               <constraint>
-                <regex>[a-zA-Z_][a-zA-Z0-9][\w\-\.]*</regex>
+                <regex>[a-zA-Z_][a-zA-Z0-9]?[\w\-\.]*</regex>
               </constraint>
               <constraintErrorMessage>Name of domain-group can only contain alpha-numeric letters, hyphen, underscores and not start with numeric</constraintErrorMessage>
             </properties>
-- 
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