Hi Marius,
I can't really say that the route table will work.
One way I used for
testing is via Ping or netcat without any local parameters. The
choosing of the local address and port is left to the kernel, the same
as kamailio with mhomed, so if you can find a suitable routeing table
where only the ucarp interfaces are selected then you are ok. Why
don't you listen also on 192.168.1.99/192.168.2.99 ?
When kamailio transmits the messages it will substitute (by default) the
outbound interface ip address for its route/via headers. If I enable
kamailio to listen on all addresses then kamailio sends the messages
with source address of .99. I need the source address and routing
headers to contain the floating address (.100), this is also for NAT
traversal on the "public" address of the proxy.