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-rw-r--r--interface-definitions/service_dns_forwarding.xml.in2
1 files changed, 1 insertions, 1 deletions
diff --git a/interface-definitions/service_dns_forwarding.xml.in b/interface-definitions/service_dns_forwarding.xml.in
index a54618e82..b52b4bda3 100644
--- a/interface-definitions/service_dns_forwarding.xml.in
+++ b/interface-definitions/service_dns_forwarding.xml.in
@@ -115,7 +115,7 @@
<description>An absolute DNS domain name</description>
</valueHelp>
<constraint>
- <validator name="fqdn"/>
+ <regex>((?!-)[-_a-zA-Z0-9.]{1,63}|@|any)(?&lt;!\.)</regex>
</constraint>
</properties>
<children>