ACE won't start

[obliterat0r]

I just did a clean install of the mod (not upgrading it) but it won't start and I don't know what's wrong with it. What is this "MULTIHOME" thing and how to solve it? Thanks.
(Server is using Linux) log file:
+--------------------------------------+
| ACE for Unreal Tournament |
| BETA v08h |
| (c) 2009-2010 - AnthraX |
+--------------------------------------+
[ACEv08h]: Settings:
[ACEv08h]: - InitialCheckTimeout : 70.000000 seconds
[ACEv08h]: - PeriodicCheckTimeout : 60.000000 seconds
[ACEv08h]: - ScreenshotTimeout : 40.000000 seconds
[ACEv08]: AutoConfig Actor Initialized
[ACEv08]: Found a new package containing a HUD: UTPureRC7G
[ACEv08]: AutoConfig Added Package: UTPureRC7G.u
[ACEv08]: Found a new package containing a HUD: Nexgen112N
[ACEv08]: AutoConfig Added Package: Nexgen112N.u
[ACEv08]: Found a new package containing a Nexgen HUD Extension: NexgenPlus100N
[ACEv08]: AutoConfig Added Package: NexgenPlus100N.u
[ACEv08]: Found a new package containing a HUDMutator: AntiNetHack21
[ACEv08]: AutoConfig Added Package: AntiNetHack21.u
[ACEv08]: Found a new package containing a HUDMutator: ConsoleChecker15
[ACEv08]: AutoConfig Added Package: ConsoleChecker15.u
[ACEv08]: Found a new package containing a HUDMutator: SmartCTF_4E
[ACEv08]: AutoConfig Added Package: SmartCTF_4E.u
[ACEv08]: AutoConfig Added Package: Unrealshare.u
[ACEv08]: AutoConfig Added Package: UnrealI.u
[ACEv08]: AutoConfig Added Package: Fire.u
[ACEv08]: AutoConfig Actor Exiting
[ACEv08h]: - UPackage[0] - FileName: UTPureRC7G.u
[ACEv08h]: - UPackage[0] - FileMD5 : 210BF724D2E0EFEE39B04E2A2044AF08
[ACEv08h]: - UPackage[0] - FileSize: 393869
[ACEv08h]: - UPackage[1] - FileName: Nexgen112N.u
[ACEv08h]: - UPackage[1] - FileMD5 : 912B5AA4B998A26471265D8B1B437825
[ACEv08h]: - UPackage[1] - FileSize: 1698534
[ACEv08h]: - UPackage[2] - FileName: NexgenPlus100N.u
[ACEv08h]: - UPackage[2] - FileMD5 : 7E93232C15C2D0F790569479116DCBD5
[ACEv08h]: - UPackage[2] - FileSize: 579893
[ACEv08h]: - UPackage[3] - FileName: AntiNetHack21.u
[ACEv08h]: - UPackage[3] - FileMD5 : EC2EA649EF79F6DC0063C4DAA2C91DCE
[ACEv08h]: - UPackage[3] - FileSize: 8926
[ACEv08h]: - UPackage[4] - FileName: ConsoleChecker15.u
[ACEv08h]: - UPackage[4] - FileMD5 : 8F6167E90C063455F2926B5EF582ABDC
[ACEv08h]: - UPackage[4] - FileSize: 5283
[ACEv08h]: - UPackage[5] - FileName: SmartCTF_4E.u
[ACEv08h]: - UPackage[5] - FileMD5 : 59D0863EBE02DC587BAB13640C40D094
[ACEv08h]: - UPackage[5] - FileSize: 382239
[ACEv08h]: - UPackage[6] - FileName: Unrealshare.u
[ACEv08h]: - UPackage[6] - FileMD5 : 093AB7198B338C75CB2B8E7C1FED46A6
[ACEv08h]: - UPackage[6] - FileSize: 22124694
[ACEv08h]: - UPackage[7] - FileName: UnrealI.u
[ACEv08h]: - UPackage[7] - FileMD5 : 08C4E3B751C81F28E7D0ECDCD2E759CD
[ACEv08h]: - UPackage[7] - FileSize: 18549361
[ACEv08h]: - UPackage[8] - FileName: Fire.u
[ACEv08h]: - UPackage[8] - FileMD5 : 7F283BF42B1323CAC480C0961F21E356
[ACEv08h]: - UPackage[8] - FileSize: 15248
[ACEv08h]: ERROR: Your server is not set up properly.
[ACEv08h]: ERROR: Please use the -MULTIHOME= parameter to specify your ServerIP.
[ACEv08h]: ERROR: ACE is now disabled.

[Chamberly]

You are better off asking Anthrax here http://unrealadmin.org/

[Barbie]

What is this "MULTIHOME" thing and how to solve it?

See Wikipedia > Multihoming: Multihoming is the practice of connecting a host or a computer network to more than one network.
Just do as advised there and add server's IP address to the server start command line. How? See for example this thread on unrealadmin.org forum, start at #338.