Quoting Ron King <rking@mro.nmt.edu>:
> Your default route is eth0 for the network shared between the two
> servers. Should be eth0:0.
With the help of Ron on private conversation, I solved the problem
by removing the network route, leaving only the host route on
Alexander:
alexander:~# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.4.11 0.0.0.0 255.255.255.255 UH 0 0 0 vif5.0
192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
0.0.0.0 192.168.1.1 0.0.0.0 UG 0 0 0 eth0
Thanx all for the help, much apprecieated.