https://forum.netgate.com/topic/130740/openvpn-clients-accessing-ipsec-tunnel-to-amazon-vpc
OpenVPN clients accessing IPSEC tunnel to Amazon VPC | Netgate Forum
May 10, 2018 - I've read all the threads about OpenVPN clients accessing networks on IPSEC tunnels and the consensus seems to be you have to add additional phase 2 entries ...
openvpn clientsamazon vpcaccessingipsectunnel
https://redmine.pfsense.org/issues/6847?tab=notes
Feature #6847: Register CN of OpenVPN clients in DNS Resolver - pfSense - pfSense bugtracker
openvpn clientsdns resolverfeatureregistercn
https://forum.opnsense.org/index.php?topic=12460.0;prev_next=next
OpenVPN DNS DHCP options not pushed to clients
OpenVPN DNS DHCP options not pushed to clients
openvpndnsdhcpoptionspushed