luci-mod-network: fix rebind list validation

Fixes: 62e28f4b0 ("luci-mod-network: dhcp.js: fix address and rebind list validation")
Signed-off-by: Jo-Philipp Wich <jo@mein.io>

1 files changed, 3 insertions, 0 deletions

diff --git a/modules/luci-mod-network/htdocs/luci-static/resources/view/network/dhcp.js b/modules/luci-mod-network/htdocs/luci-static/resources/view/network/dhcp.js
index 69dd057c67..430dc6601a 100644
--- a/modules/luci-mod-network/htdocs/luci-static/resources/view/network/dhcp.js
+++ b/modules/luci-mod-network/htdocs/luci-static/resources/view/network/dhcp.js
@@ -76,6 +76,9 @@ function validateHostname(sid, s) {
 }
 
 function validateAddressList(sid, s) {
+	if (s == null || s == '')
+		return true;
+
 	var m = s.match(/^\/(.+)\/$/),
 	    names = m ? m[1].split(/\//) : [ s ];