Now works - more or less fully

terraform/main.tf

@@ -39,6 +39,73 @@ resource "hpe1810_system_description" "draupnir01" {
   contact  = ""
 }
 
+# Fifth write resource: Time Zone Configuration. Singleton; Delete resets
+# to "None" with an empty acronym (see resource_time_zone.go).
+resource "hpe1810_time_zone" "draupnir01" {
+  zone    = "(GMT+01:00) Amsterdam, Berlin, Bern, Rome, Stockholm, Vienna"
+  acronym = ""
+}
+
+# Sixth write resource: LLDP Global Mode settings only (LLDPConfig.html's
+# per-port Interface Mode table isn't covered -- see resource_lldp_configuration.go).
+# Singleton; Delete resets to factory defaults.
+resource "hpe1810_lldp_configuration" "draupnir01" {
+  transmit_interval     = 30
+  transmit_hold         = 4
+  reinit_delay          = 2
+  notification_interval = 5
+}
+
+# Seventh write resource: Daylight Saving Time. Singleton; only "Disable"
+# and "Recurring" modes are supported (see resource_daylight_saving_time.go
+# and client/dst_config.go -- NonRecurring uses a different field set and is
+# rejected). Delete sets mode to Disable. Values below match what's
+# currently live (standard EU DST rule).
+resource "hpe1810_daylight_saving_time" "draupnir01" {
+  mode           = "Recurring"
+  start_week     = 5
+  start_day      = "Sun"
+  start_month    = "Mar"
+  start_hour     = 2
+  start_minute   = 0
+  end_week       = 5
+  end_day        = "Sun"
+  end_month      = "Oct"
+  end_hour       = 3
+  end_minute     = 0
+  offset_minutes = 1
+  offset_acronym = ""
+}
+
+# Eighth write resource: Flow Control (SwitchConfig.html). Singleton;
+# Delete resets to Enable (factory default).
+resource "hpe1810_flow_control" "draupnir01" {
+  enabled = true
+}
+
+# Ninth write resource: Port Mirroring global settings only (FDBConfig.html's
+# per-source-port Direction table isn't covered -- see resource_port_mirroring.go).
+# Singleton; Delete disables mirroring and clears the destination port.
+resource "hpe1810_port_mirroring" "draupnir01" {
+  enabled          = false
+  destination_port = ""
+}
+
+# Tenth write resource: link aggregation (LAG). Genuinely different shape
+# from everything above -- a named sub-entity with create/delete, not a
+# singleton or a fixed for_each set. See resource_trunk.go and
+# client/trunk.go for the full write-protocol writeup, including the
+# "including the Create-section fields in a delete request creates ANOTHER
+# trunk as a side effect" quirk. admin_mode/static_capability are read-only
+# here (not independently verified writable). Delete removes the trunk.
+# No trunk declared by default -- add one here when you actually want to
+# bond ports, e.g.:
+#
+#   resource "hpe1810_trunk" "unraid" {
+#     name    = "unraid"
+#     members = ["5", "6"]
+#   }
+
 data "hpe1810_system_description" "draupnir01" {}
 data "hpe1810_network_setup" "draupnir01" {}
 data "hpe1810_port_summary" "draupnir01" {}