For those of you interested in IPv6: IPv6-Verteilung page 131 ct 2016, Heft 24 https://www.heise.de/ct/ausgabe/2016-24-pfSense-als-Load-Balancer-3458348.html I'll try this with my pfSense running on Shuttle DS437. Already with Multi-WAN VDSL (sunrise.ch private IPv4 only) and LTE. I ordered now one more naked DSL for getting IPv6. This is triple Multi-WAN (VDSL IPv4 only, VDSL dual stack and LTE) with load balancing. Also with Unbound DNS Resolver. This is fun ;-)