at the end of a live migration, we need to remove old mac entries
on source host (vm is not yet stopped), before resume vm on target host

Signed-off-by: Alexandre Derumier <aderum...@odiso.com>
---
 PVE/QemuMigrate.pm                    |  1 +
 PVE/QemuServer.pm                     | 20 ++++++++++++++++++++
 test/MigrationTest/QemuMigrateMock.pm |  3 +++
 3 files changed, 24 insertions(+)

diff --git a/PVE/QemuMigrate.pm b/PVE/QemuMigrate.pm
index d52dc8d..b72a3fe 100644
--- a/PVE/QemuMigrate.pm
+++ b/PVE/QemuMigrate.pm
@@ -1157,6 +1157,7 @@ sub phase3_cleanup {
 
     # transfer replication state before move config
     $self->transfer_replication_state() if $self->{is_replicated};
+    PVE::QemuServer::del_nets_bridge_fdb($conf, $vmid);
     PVE::QemuConfig->move_config_to_node($vmid, $self->{node});
     $self->switch_replication_job_target() if $self->{is_replicated};
 
diff --git a/PVE/QemuServer.pm b/PVE/QemuServer.pm
index 6d71006..47a4882 100644
--- a/PVE/QemuServer.pm
+++ b/PVE/QemuServer.pm
@@ -8258,4 +8258,24 @@ sub add_nets_bridge_fdb {
        }
     }
 }
+
+sub del_nets_bridge_fdb {
+    my ($conf, $vmid) = @_;
+
+    foreach my $opt (keys %$conf) {
+       if ($opt =~  m/^net(\d+)$/) {
+           my $net = parse_net($conf->{$opt});
+           next if !$net;
+           next if !$net->{macaddr};
+
+           my $iface = "tap${vmid}i$1";
+           if ($have_sdn) {
+               PVE::Network::SDN::Zones::del_bridge_fdb($iface, 
$net->{macaddr}, $net->{bridge}, $net->{firewall});
+           } else {
+               PVE::Network::del_bridge_fdb($iface, $net->{macaddr}, 
$net->{firewall});
+           }
+       }
+    }
+}
+
 1;
diff --git a/test/MigrationTest/QemuMigrateMock.pm 
b/test/MigrationTest/QemuMigrateMock.pm
index f2c0281..f00b974 100644
--- a/test/MigrationTest/QemuMigrateMock.pm
+++ b/test/MigrationTest/QemuMigrateMock.pm
@@ -158,6 +158,9 @@ $MigrationTest::Shared::qemu_server_module->mock(
        $vm_stop_executed = 1;
        delete $expected_calls->{'vm_stop'};
     },
+    del_nets_bridge_fdb => sub {
+       return;
+    },
 );
 
 my $qemu_server_cpuconfig_module = 
Test::MockModule->new("PVE::QemuServer::CPUConfig");
-- 
2.30.2


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