Hi, I just wrote an ebuild script for a small util named xnetload. xnetload runs under the X Window system and will show a count and graph of the traffic over a specified network connection. t either displays bytes/second or packets/second, based on the capabilities of the kernel. On 2.1.x and later kernels (including the 2.2.x and 2.4.x series) it displays bytes/s. It requires the /proc file system, or rather /proc/net/dev which is only found in Linux. So AFAIK this program is Linux specific. I suggest x11-misc/xnetload. This ebuild depends on X11.
Created attachment 4602 [details] xnetload-1.11.3 ebuild script
the ebuild you submitted was not working. I had to heavily edit it. added to portage.