Linux ip route matching the source ip
Solution 1:
Yes that's called source routing :
ip rule add from 10.0.0.10 table toto
ip route add default via 88.88.88.88 dev eth1 table toto
You can have more informations here :
source routing in the lartc guide
Solution 2:
Any routing decisions based not on destination IP address called PBR (policy-based routing). Usually, PBR is implemented via firewall, so look for possibility to change out interface for packet in iptables.