diff --git a/lib/App/Netdisco/DB.pm b/lib/App/Netdisco/DB.pm
index 74074f95..e0461961 100644
--- a/lib/App/Netdisco/DB.pm
+++ b/lib/App/Netdisco/DB.pm
@@ -11,7 +11,7 @@ __PACKAGE__->load_namespaces(
 );
 
 our # try to hide from kwalitee
-  $VERSION = 56; # schema version used for upgrades, keep as integer
+  $VERSION = 57; # schema version used for upgrades, keep as integer
 
 use Path::Class;
 use File::ShareDir 'dist_dir';
diff --git a/lib/App/Netdisco/DB/Result/DevicePortVlan.pm b/lib/App/Netdisco/DB/Result/DevicePortVlan.pm
index fca103d2..acf58954 100644
--- a/lib/App/Netdisco/DB/Result/DevicePortVlan.pm
+++ b/lib/App/Netdisco/DB/Result/DevicePortVlan.pm
@@ -18,6 +18,8 @@ __PACKAGE__->add_columns(
   { data_type => "integer", is_nullable => 0 },
   "native",
   { data_type => "boolean", default_value => \"false", is_nullable => 0 },
+  "egress_tag",
+  { data_type => "boolean", default_value => \"true",  is_nullable => 0 },
   "creation",
   {
     data_type     => "timestamp",
diff --git a/lib/App/Netdisco/Worker/Plugin/Discover/VLANs.pm b/lib/App/Netdisco/Worker/Plugin/Discover/VLANs.pm
index 70bf26d2..0ac7034e 100644
--- a/lib/App/Netdisco/Worker/Plugin/Discover/VLANs.pm
+++ b/lib/App/Netdisco/Worker/Plugin/Discover/VLANs.pm
@@ -18,35 +18,24 @@ register_worker({ phase => 'main', driver => 'snmp' }, sub {
   my $v_name  = $snmp->v_name;
   my $v_index = $snmp->v_index;
 
-  # build device vlans suitable for DBIC
-  my %v_seen = ();
-  my @devicevlans;
-  foreach my $entry (keys %$v_name) {
-      my $vlan = $v_index->{$entry};
-      next unless defined $vlan and $vlan;
-      ++$v_seen{$vlan};
-
-      push @devicevlans, {
-          vlan => $vlan,
-          description => $v_name->{$entry},
-          last_discover => \'now()',
-      };
-  }
-
   # cache the device ports to save hitting the database for many single rows
   my $device_ports = vars->{'device_ports'}
     || { map {($_->port => $_)} $device->ports->all };
 
   my $i_vlan            = $snmp->i_vlan;
-  my $i_vlan_membership = $snmp->i_vlan_membership;
   my $i_vlan_type       = $snmp->i_vlan_type;
   my $interfaces        = $snmp->interfaces;
+  my $i_vlan_membership          = $snmp->i_vlan_membership;
+  my $i_vlan_membership_untagged = $snmp->i_vlan_membership_untagged;
 
-  # build device port vlans suitable for DBIC
+  my %p_seen = ();
   my @portvlans = ();
-  foreach my $entry (keys %$i_vlan_membership) {
+
+  # build port vlans suitable for DBIC
+  foreach my $entry (keys %$i_vlan_membership_untagged, keys %$i_vlan_membership) {
       my %port_vseen = ();
       my $port = $interfaces->{$entry} or next;
+      my $type = $i_vlan_type->{$entry};
 
       if (!defined $device_ports->{$port}) {
           debug sprintf ' [%s] vlans - local port %s already skipped, ignoring',
@@ -54,8 +43,6 @@ register_worker({ phase => 'main', driver => 'snmp' }, sub {
           next;
       }
 
-      my $type = $i_vlan_type->{$entry};
-
       foreach my $vlan (@{ $i_vlan_membership->{$entry} }) {
           next unless defined $vlan and $vlan;
           next if ++$port_vseen{$vlan} > 1;
@@ -65,31 +52,30 @@ register_worker({ phase => 'main', driver => 'snmp' }, sub {
               port => $port,
               vlan => $vlan,
               native => $native,
+              egress_tag => 't',
               vlantype => $type,
               last_discover => \'now()',
           };
+          ++$p_seen{$vlan};
+      }
 
-          next if $v_seen{$vlan};
+      foreach my $vlan (@{ $i_vlan_membership_untagged->{$entry} }) {
+          next unless defined $vlan and $vlan;
+          next if ++$port_vseen{$vlan} > 1;
 
-          # also add an unnamed vlan to the device
-          push @devicevlans, {
+          my $native = ((defined $i_vlan->{$entry}) and ($vlan eq $i_vlan->{$entry})) ? "t" : "f";
+          push @portvlans, {
+              port => $port,
               vlan => $vlan,
-              description => (sprintf "VLAN %d", $vlan),
+              native => $native,
+              egress_tag => 'f',
+              vlantype => $type,
               last_discover => \'now()',
           };
-          ++$v_seen{$vlan};
+          ++$p_seen{$vlan};
       }
   }
 
-  schema('netdisco')->txn_do(sub {
-    my $gone = $device->vlans->delete;
-    debug sprintf ' [%s] vlans - removed %d device VLANs',
-      $device->ip, $gone;
-    $device->vlans->populate(\@devicevlans);
-    debug sprintf ' [%s] vlans - added %d new device VLANs',
-      $device->ip, scalar @devicevlans;
-  });
-
   schema('netdisco')->txn_do(sub {
     my $gone = $device->port_vlans->delete;
     debug sprintf ' [%s] vlans - removed %d port VLANs',
@@ -99,6 +85,41 @@ register_worker({ phase => 'main', driver => 'snmp' }, sub {
     return Status->info(sprintf ' [%s] vlans - added %d new port VLANs',
       $device->ip, scalar @portvlans);
   });
+
+  my %d_seen = ();
+  my @devicevlans = ();
+
+  # add unnamed vlans to the device
+  foreach my $entry (keys %$v_name) {
+      my $vlan = $v_index->{$entry};
+      next unless defined $vlan and $vlan;
+      ++$d_seen{$vlan};
+
+      push @devicevlans, {
+          vlan => $vlan,
+          description => $v_name->{$entry},
+          last_discover => \'now()',
+      };
+  }
+
+  # also add unnamed vlans to the device
+  foreach my $vlan (keys %p_seen) {
+      next if $d_seen{$vlan};
+      push @devicevlans, {
+          vlan => $vlan,
+          description => (sprintf "VLAN %d", $vlan),
+          last_discover => \'now()',
+      };
+  }
+
+  schema('netdisco')->txn_do(sub {
+    my $gone = $device->vlans->delete;
+    debug sprintf ' [%s] vlans - removed %d device VLANs',
+      $device->ip, $gone;
+    $device->vlans->populate(\@devicevlans);
+    debug sprintf ' [%s] vlans - added %d new device VLANs',
+      $device->ip, scalar @devicevlans;
+  });
 });
 
 true;
diff --git a/share/schema_versions/App-Netdisco-DB-56-57-PostgreSQL.sql b/share/schema_versions/App-Netdisco-DB-56-57-PostgreSQL.sql
new file mode 100644
index 00000000..480c4ba2
--- /dev/null
+++ b/share/schema_versions/App-Netdisco-DB-56-57-PostgreSQL.sql
@@ -0,0 +1,5 @@
+BEGIN;
+
+ALTER TABLE device_port_vlan ADD COLUMN "egress_tag" boolean not null default false;
+
+COMMIT;