Are you tinkering with yellowpages at all?, I've had a few 480's occasionally on restart with 2.2 and a simple config
Whereas beta 29 has never thrown such an error with same config.
This is on a linux vps with various other webservices running.
code:
2013-10-16 22:39:18 ERROR [YP] Stream #1 connection attempt failed. YP2 error code is 480 [Cannot see your station/computer (URL: http://37.247.50.178:8000/1) from the Internet, disable Internet Sharing/NAT/firewall/ISP cache.]