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-rw-r--r--interface-definitions/firewall.xml.in3
1 files changed, 2 insertions, 1 deletions
diff --git a/interface-definitions/firewall.xml.in b/interface-definitions/firewall.xml.in
index 95b331e71..d0218579c 100644
--- a/interface-definitions/firewall.xml.in
+++ b/interface-definitions/firewall.xml.in
@@ -104,8 +104,9 @@
<properties>
<help>Firewall domain-group</help>
<constraint>
- <regex>[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>
<children>
<leafNode name="address">