Hi! I put together a setup to measure the performance of IP aliasing in Linux. (See related blog post[1].) The problem is, observed throughput increases as the number of aliases increase. Despite this problem does not specifically related with Debian, I hope to find some answers here. Any helps will be really appreciated. Best. [1] http://vyazici.blogspot.com/2012/05/performance-of-linux-ip-aliased-network.html