[LARTC] Wrong src addr is pkts

[LARTC] Wrong src addr is pkts

[Michael Davidson]

Hi

I have a FW dual homed  to the Internet via a leased line and most 
recently  by a ADSL line.

I have SQUID running on the FW which I want to direct to the ADSL line 
as well as other traffic from my  LAN.

After reading the LARTC Howto and the on-line book by Matthew ?? I have 
my LAN-Internet  traffic sorted but the SQUID traffic  is a problem.

This is my  config on a test machine:

Chain OUTPUT (policy ACCEPT 47542 packets, 4771K bytes)
 pkts bytes target     prot opt in     out     source               
destination
  458 44858 MARK       tcp  --  *      *       0.0.0.0/0            
0.0.0.0/0           tcp dpts:80:443 MARK set 0x1d

# ip rule ls
0:      from all lookup local
2000:   from all fwmark 0x1d iif lo lookup table2
32766:  from all lookup main
32767:  from all lookup default
#

]# ip route ls table 2
192.168.10.16/28 dev eth1  proto kernel  scope link  src 192.168.10.30
10.1.1.0/24 dev eth2  proto kernel  scope link  src 10.1.1.254
10.3.0.0/23 dev eth0  proto kernel  scope link  src 10.3.1.224
default via 10.1.1.59 dev eth2  src 10.1.1.254

Eth0 is the leased line, eth2 is the ADSL line and eth1 my internal LAN.

My default route in the "main" table points to the leased line.

With the above config I find that the output of squid  is routed to the 
ADSL line as desired, however, the problem is that the source address in 
the packets is that of my LL interface. Is there a way to fix this?

I've read a lot on the web but I find that I'm now going in circles so 
any help would be appreciated.

Regards Mike.D.

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