我有一个专用的服务器连接到1000 Mbit的端口。 但是，Debian客户只能获得1/4的速度：
在节点本身（Linux节点2.6.32-279.9.1.el6.x86_64＃1 SMP周二9月25日21:43:11 UTC 2012 x86_64 x86_64 x86_64 GNU / Linux）：
wget http://www.bbned.nl/scripts/speedtest/download/file1000mb.bin -O /dev/null --2012-11-11 23:10:11-- http://www.bbned.nl/scripts/speedtest/download/file1000mb.bin Resolving www.bbned.nl... 62.177.144.181 Connecting to www.bbned.nl|62.177.144.181|:80... connected. HTTP request sent, awaiting response... 200 OK Length: 1048576000 (1000M) [application/octet-stream] Saving to: â/dev/nullâ 100%[====================================>] 1,048,576,000 100M/s in 10s 2012-11-11 23:10:21 (100 MB/s) - â/dev/nullâ 在客户端（Debian 6.0.5，x64：Linux debian 2.6.32-5-amd64＃1 SMP Sun Sep 23 10:07:46 UTC 2012 x86_64 GNU / Linux）：
wget http://www.bbned.nl/scripts/speedtest/download/file1000mb.bin -O /dev/null --2012-11-11 23:10:41-- http://www.bbned.nl/scripts/speedtest/download/file1000mb.bin Resolving www.bbned.nl... 62.177.144.181 Connecting to www.bbned.nl|62.177.144.181|:80... connected. HTTP request sent, awaiting response... 200 OK Length: 1048576000 (1000M) [application/octet-stream] Saving to: â/dev/nullâ 100%[=================================================================================================================================================================================================>] 1,048,576,000 16.5M/s in 42s 2012-11-11 23:11:23 (23.8 MB/s) - â/dev/nullâ
我使用virtio网卡。 我尝试了更多的网卡：e1000和Realtek 8139，但是这样会产生更糟糕的结果。
任何人有一个想法如何提高这些速度？
它已被修复：
service iptables stop echo > /etc/sysconfig/iptables service iptables start
似乎有一些mangle iptable规则。