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-rw-r--r--modules/luci-base/htdocs/luci-static/resources/protocol/static.js3
1 files changed, 3 insertions, 0 deletions
diff --git a/modules/luci-base/htdocs/luci-static/resources/protocol/static.js b/modules/luci-base/htdocs/luci-static/resources/protocol/static.js
index 8470e0a20e..9039acd5f3 100644
--- a/modules/luci-base/htdocs/luci-static/resources/protocol/static.js
+++ b/modules/luci-base/htdocs/luci-static/resources/protocol/static.js
@@ -189,6 +189,9 @@ return network.registerProtocol('static', {
o = s.taboption('general', form.Value, 'ip6hint', _('IPv6 assignment hint'), _('Assign prefix parts using this hexadecimal subprefix ID for this interface.'));
o.placeholder = '0';
o.validate = function(section_id, value) {
+ if (value == null || value == '')
+ return true;
+
var n = parseInt(value, 16);
if (!/^(0x)?[0-9a-fA-F]+$/.test(value) || isNaN(n) || n >= 0xffffffff)