[strongSwan] source-based routing

[FA]

Hi,

I want to be able to route one specific IP (say 192.168.0.100) address on local LAN A so that its gateway is gateway of remote LAN B (say 192.168.10.1). LAN A and B are connected through a site-to-site VPN using strongswan:

conn site-site
	ikelifetime=60m
	keylife=20m
	rekeymargin=3m
	keyingtries=1
	keyexchange=ikev2
	authby=secret
	left=fqdnA
	leftsubnet=192.168.0.0/24
	leftid=@fqdnA
	right=fqdnB
	rightsubnet=192.168.10.0/24
	rightid=@fqdnB
	auto=route

Any help would be greatly appreciated

Running StrongSwan 5.0.0-1 on openwrt 12.09