From b3d7011130a3b6311ed80bdca3a11a356d7d2b2a Mon Sep 17 00:00:00 2001
From: Christof Schulze <christof.schulze@gmx.net>
Date: Wed, 16 May 2018 16:59:47 +0200
Subject: [PATCH] gluon-core: make sure dns traffic leaves the correct
interface when there is ipv6 wan uplink
---
package/gluon-core/luasrc/lib/gluon/upgrade/820-dns-config | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/package/gluon-core/luasrc/lib/gluon/upgrade/820-dns-config b/package/gluon-core/luasrc/lib/gluon/upgrade/820-dns-config
index 18b44d3f3..c29e51696 100755
--- a/package/gluon-core/luasrc/lib/gluon/upgrade/820-dns-config
+++ b/package/gluon-core/luasrc/lib/gluon/upgrade/820-dns-config
@@ -16,6 +16,13 @@ uci:delete('dhcp', dnsmasq, 'cachesize')
uci:delete('firewall', 'client_dns')
if dns.servers then
+ localipv6 = uci:get("network", "loopback", "ip6addr")
+ -- below is an ugly hack that makes sure the dns upstream traffic is leaving the correct network interface.
+ appended = {}
+ for i,s in ipairs(dns.servers) do
+ table.insert(appended, s .. "@" .. string.sub(localipv6,0, string.find(localipv6,"/")-1 ) )
+ end
+ uci:set('dhcp', dnsmasq, 'server', appended )
-- allow inbound traffic for dns from client zone
uci:section('firewall', 'rule', 'client_dns', {
src = 'local_client',
--
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