Running two different minecraft servers at the same time

[alphaQ101]

I've been having trouble running two different minecraft server at the same time (one is tekkit the other is bukkit) on a ubuntu server. I only have one ip but I changed the port numbers to two different ones (25565 and 25567.) Both servers work when the other one is off but if I try to turn both of them on at the same time, the second server never starts up. How would I fix this?

[.=QUACK=.Major.Pain]

Try increasing the second server port by 10.
25575.

Your first might be using 25567 and you don't know it.

[FlyingMongoose]

I believe there is a "query port" in server.properties now that minecraft has built in querying (speaking of which minequery should be pulled off the autoinstallers on the managed servers), so make sure query-port is diferent.