[#2392] Fixed kea-dhcp6 not updating outbound FQDN

Added Changelog

src/bin/dhcp6/dhcp6_srv.cc
    Dhcpv6Srv::processClientFqdn() - changed to update the outbound FQDN

2 files changed, 7 insertions, 1 deletions

diff --git a/ChangeLog b/ChangeLog
index e869058add..ca897f49c4 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,11 @@
 Kea 2.1.5 (development) released on Apr 27, 2022
 
+2015.	[bug]		tmark
+	Fixed an issue in kea-dhcp6 that was causing the server
+	not to update the FQDN option in outbound responses when
+	the ddsn-tuning hook lib calculates a new host name.
+	(Gitlba #2392)
+
 2014.	[bug]		tmark
 	Correct an issue that was causing reconfigure to fail
 	in kea-dhcp4 and kea-dhcp6 when using ddns-tuning hook
diff --git a/src/bin/dhcp6/dhcp6_srv.cc b/src/bin/dhcp6/dhcp6_srv.cc
index 86e6b0765a..11fc182cd1 100644
--- a/src/bin/dhcp6/dhcp6_srv.cc
+++ b/src/bin/dhcp6/dhcp6_srv.cc
@@ -1981,7 +1981,7 @@ Dhcpv6Srv::processClientFqdn(const Pkt6Ptr& question, const Pkt6Ptr& answer,
                       .arg(ctx.rev_dns_update_).arg(hook_rev_dns_update);
 
             // Update the FQDN option in the response.
-            fqdn_resp = boost::dynamic_pointer_cast<Option6ClientFqdn>(question->getOption(D6O_CLIENT_FQDN));
+            fqdn_resp = boost::dynamic_pointer_cast<Option6ClientFqdn>(answer->getOption(D6O_CLIENT_FQDN));
             if (fqdn) {
                 fqdn_resp->setDomainName(hook_hostname, Option6ClientFqdn::FULL);
             }