Bitcoind Network Startup Error

Bitcoin version v0.7.1-301-g3889ec2-beta (2013-01-07 08:12:40 -0800)
Using OpenSSL version OpenSSL 1.0.1 14 Mar 2012
Startup time: 2013-01-07 16:31:51
Default data directory /home/<user>/.bitcoin
Used data directory /home/<user>/.bitcoin
dbenv.open LogDir=/home/<user>/.bitcoin/database ErrorFile=/home/<user>/.bitcoin/db.log
Bound to [::]:8333
Bound to 0.0.0.0:8333
Loading block index...
Opening LevelDB in /home/<user>/.bitcoin/blktree
Opened LevelDB successfully
Opening LevelDB in /home/<user>/.bitcoin/coins
Opened LevelDB successfully
LoadBlockIndex(): last block file = 35
LoadBlockIndex(): last block file: CBlockFileInfo(blocks=712, size=82710573, heights=214880..215586, time=2013-01-03..2013-01-07)
LoadBlockIndex(): hashBestChain=0000000000000167102f1d0c4b1f5989c19cf70e9872b7dd1ee5ac24dde4ad4e  height=215586 date=2013-01-07 16:01:38
Verifying last 2500 blocks at level 1
 block index           30275ms
Loading wallet...
nFileVersion = 79900
 wallet                  477ms
Loading addresses...
ERROR: CAddrman::Read() : invalid network magic number
Invalid or missing peers.dat; recreating
Loaded 0 addresses from peers.dat  12ms
mapBlockIndex.size() = 215610
nBestHeight = 215586
setKeyPool.size() = 101
mapWallet.size() = 1417
mapAddressBook.size() = 10
Done loading
send version message: version 60002, blocks=215586, us=0.0.0.0:0, them=0.0.0.0:0, peer=127.0.0.1:0
ThreadRPCServer started
ThreadDNSAddressSeed started
Loading addresses from DNS seeds (could take a while)
ThreadIRCSeed started
ThreadIRCSeed exited
ThreadSocketHandler started
ThreadOpenAddedConnections started
ThreadOpenConnections started
ThreadMessageHandler started
ThreadDumpAddress started
Error: An error occurred while setting up the RPC port 8421 for listening on IPv4: bind: Cannot assign requested address
Flush(false)
wallet.dat refcount=0
wallet.dat checkpoint
ThreadRPCServer exited
Flushed 0 addresses to peers.dat  174ms
ThreadMessageHandler exited
ThreadSocketHandler exited
GetMyExternalIP() received [<my ip>] <my ip>:0
GetMyExternalIP() returned <my ip>
AddLocal(<my ip>:8333,5)
wallet.dat detach
Added 28 addresses from 178.18.90.41: 0 tried, 28 new
wallet.dat closed
DBFlush(false) ended             216ms
StopNode()
Added 25 addresses from ::: 0 tried, 53 new
ThreadOpenConnections exited
ThreadOpenAddedConnections exited
Added 26 addresses from 173.242.112.53: 0 tried, 79 new
Added 13 addresses from ::: 0 tried, 92 new
92 addresses found from DNS seeds
ThreadDNSAddressSeed exited
Flushed 92 addresses to peers.dat  27ms
Committing 699 changed transactions to coin database...
Flush(true)
DBFlush(true) ended               0ms
Bitcoin exited