Using multiple DSL internet connections and load balancing

["Ivan Montoro" <ivanm@knowgate.com>]

Hi everybody,

I've just installed my fresh copy of OpenBSD in my old internet gateway,
and I'm wondering if it's possible to buy a second internet connection
(DSL in my case) and load balance traffic in some way. Well, I don't 
even need a *true* load balance, just use one connection for Web/FTP
and leave the other one for mail and other not-so-bandwidth-intensive
applications.

Here goes the schema of the network:
#                          +---------+ 
# LAN 192.168.1.0/24 ------| OpenBSD +--- Primary DSL 
#                     .254 +----+----+    (62.9.10.252, gw 62.9.10.193)
#                               |
#                               | Secondary DSL 
#                               | (62.4.11.147, gw 62.4.11.129)       

I've set up the gateway with the first DSL, leaving the second down. 
Everything works fine, NAT, remote access via SSH, FTP, etc... 

Now I don't know what's next. I've seen that Squid has a directive
"tcp_outgoing_address" that could help me (default gw for LAN is the
box and I'll setup a transparent proxy). Another option is use the
"divert" option in PF to forward traffic from LAN to any DSL I want.

By now I haven't done anything, since I don't know which option should
I choose or what commands should I issue to make this work. Please
consider that I'm barely newbie on this, so detailed explainations will
be largely appreciated ;)

Thanks

Ivan Montoro