From 551f06218755076cde588c848c01ce5ca1bf5e6b Mon Sep 17 00:00:00 2001
From: Indrajit Raychaudhuri <irc@indrajit.com>
Date: Thu, 21 Dec 2023 03:18:45 -0600
Subject: dhcp: T5846: Ensure DUID regex range is bound

The DUID regex was missing a lower bound, which could cause it not to
match when it should.

We have to specify the lower bound explicitly as 0 to keep the regex
behavior similar to that in Python (in Python, omitting the lower bound
is equivalent to specifying 0).
---
 interface-definitions/include/interface/duid.xml.i | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/interface-definitions/include/interface/duid.xml.i b/interface-definitions/include/interface/duid.xml.i
index 4f8988dfa..8d808696e 100644
--- a/interface-definitions/include/interface/duid.xml.i
+++ b/interface-definitions/include/interface/duid.xml.i
@@ -7,7 +7,7 @@
       <description>DHCP unique identifier</description>
     </valueHelp>
     <constraint>
-      <regex>([0-9A-Fa-f]{2}:){,127}([0-9A-Fa-f]{2})</regex>
+      <regex>([0-9A-Fa-f]{2}:){0,127}([0-9A-Fa-f]{2})</regex>
     </constraint>
     <constraintErrorMessage>Invalid DUID, must be in the format h[[:h]...]</constraintErrorMessage>
   </properties>
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