> Bringing up loopback interface: [ OK ]
> Bringing up interface eth0:
I do not see the last OK, on the eth0 line, assuming you have just not copied the OK you have no delay in setting up your network interface,
and in that case your problem look like not related to the LAN connection.
But you have not had the OK "almost instantly", and took long time, then your problem is bound to network configuration.
How to proceed, heavily depend on the proper answer.