Shape an Interfacegroup possible?

[spiritbreaker]

Hi,

after long time testing the trafficshaper in 2.0.1 i got stucked.

Setup:

Kabel Internet connection with 2 Ips (provider dhcp mac assignment -> so i cant use one Interface!).
According to this i have 2 Wan Interfaces sharing one Internetconnection.
I want to prevent splitting useable bandwidth which halves bandwidth per Interface.

Is it possible to handle this with trafficshaper without a second pfsensebox? Shape an Interfacegroup?

Tricks with Bridging dont work properly.

branch office site:
                                                                           –----------
Internet --- cablemodem --- switch ---------- WAN1 --|              |
                                          |                                | PFSENSE |------ LAN
                                          |------------- WAN2  --|              |
                                                                           ------------

PS: why i need 2 Ips? because there is limitation on pfsense for Multiwan setup on headquarter site... i cant create 2 IPSEC Connections
with different IPSEC Endpoint Source gateway Interfaces adresses (HQ real^^ multiwan) to one destination IPSEC Remote Gateway address (branch office).
I must route some networks through different IPSEC tunnels to use particular Wan interfaces for traffic.

cya