docs: add missing notes in porting guide for 6.0.0b1 (#77926)

There was an issue with the changelog in community.network 4.0.0, it's
been fixed in 4.0.1 and now properly included.

docs/docsite/rst/porting_guides/porting_guide_6.rst

@@ -214,6 +214,11 @@ cisco.dnac
 - snmpv2_read_community_credential - remove `id` and `instanceTenantId` parameter.
 - snmpv2_write_community_credential - remove `id` and `instanceTenantId` parameter.
 
+community.network
+~~~~~~~~~~~~~~~~~
+
+- The community.network collection no longer supports Ansible 2.9 and ansible-base 2.10. While we take no active measures to prevent usage, we will remove compatibility code and other compatility measures that will effectively prevent using most content from this collection with Ansible 2.9, and some content of this collection with ansible-base 2.10. Both Ansible 2.9 and ansible-base 2.10 will very soon be End of Life and if you are still using them, you should consider upgrading to ansible-core 2.11 or later as soon as possible (https://github.com/ansible-collections/community.network/pull/426).
+
 dellemc.openmanage
 ~~~~~~~~~~~~~~~~~~
 
@@ -234,6 +239,22 @@ community.hashi_vault
 - community.hashi_vault collection - support for Ansible 2.9 and ansible-base 2.10 has been removed (https://github.com/ansible-collections/community.hashi_vault/issues/189).
 - hashi_vault lookup - the deprecated ``[lookup_hashi_vault]`` INI config section has been removed in favor of the collection-wide ``[hashi_vault_collection]`` section (https://github.com/ansible-collections/community.hashi_vault/issues/179).
 
+community.network
+~~~~~~~~~~~~~~~~~
+
+- aireos modules - removed deprecated ``connection: local`` support. Use ``connection: network_cli`` instead (https://github.com/ansible-collections/community.network/pull/440).
+- aireos modules - removed deprecated ``provider`` option. Use ``connection: network_cli`` instead (https://github.com/ansible-collections/community.network/pull/440).
+- aruba modules - removed deprecated ``connection: local`` support. Use ``connection: network_cli`` instead (https://github.com/ansible-collections/community.network/pull/440).
+- aruba modules - removed deprecated ``provider`` option. Use ``connection: network_cli`` instead (https://github.com/ansible-collections/community.network/pull/440).
+- ce modules - removed deprecated ``connection: local`` support. Use ``connection: network_cli`` instead (https://github.com/ansible-collections/community.network/pull/440).
+- ce modules - removed deprecated ``provider`` option. Use ``connection: network_cli`` instead (https://github.com/ansible-collections/community.network/pull/440).
+- enos modules - removed deprecated ``connection: local`` support. Use ``connection: network_cli`` instead (https://github.com/ansible-collections/community.network/pull/440).
+- enos modules - removed deprecated ``provider`` option. Use ``connection: network_cli`` instead (https://github.com/ansible-collections/community.network/pull/440).
+- ironware modules - removed deprecated ``connection: local`` support. Use ``connection: network_cli`` instead (https://github.com/ansible-collections/community.network/pull/440).
+- ironware modules - removed deprecated ``provider`` option. Use ``connection: network_cli`` instead (https://github.com/ansible-collections/community.network/pull/440).
+- sros modules - removed deprecated ``connection: local`` support. Use ``connection: network_cli`` instead (https://github.com/ansible-collections/community.network/pull/440).
+- sros modules - removed deprecated ``provider`` option. Use ``connection: network_cli`` instead (https://github.com/ansible-collections/community.network/pull/440).
+
 Deprecated Features
 -------------------