[source] dnsmasq: honor quietdhcp option for DHCPv6

[LEDE Commits]

dedeckeh pushed a commit to source.git, branch master:
https://git.lede-project.org/07d5fc7ada9734c198f0316a872d38932116e5b0

commit 07d5fc7ada9734c198f0316a872d38932116e5b0
Author: Arjen de Korte <build+lede at de-korte.org>
AuthorDate: Fri Feb 3 11:13:59 2017 +0100

    dnsmasq: honor quietdhcp option for DHCPv6
    
    Do not spam the syslog with DHCPv6 lease info if quietdhcp option
    is selected. This already works for DHCPv4, make it work in the same
    way for DHCPv6.
    
    Signed-off-by: Arjen de Korte <build+lede at de-korte.org>
    [Originally written by Arjen de Korte on GitHub but had issues providing
    a SoB in correct format.]
    Signed-off-by: Kevin Darbyshire-Bryant <kevin at darbyshire-bryant.me.uk>
---
 package/network/services/dnsmasq/files/dnsmasq.init | 1 +
 1 file changed, 1 insertion(+)

diff --git a/package/network/services/dnsmasq/files/dnsmasq.init b/package/network/services/dnsmasq/files/dnsmasq.init
index 40c756b..954dda9 100644
--- a/package/network/services/dnsmasq/files/dnsmasq.init
+++ b/package/network/services/dnsmasq/files/dnsmasq.init
@@ -894,6 +894,7 @@ dnsmasq_start()
 		config_foreach dhcp_add dhcp
 		xappend "--enable-ra"
 		xappend "--quiet-ra"
+		append_bool "$cfg" quietdhcp "--quiet-dhcp6"
 
 	elif [ "$DNSMASQ_DHCP_VER" -gt 0 ] ; then
 		config_foreach dhcp_add dhcp