I'm trying to send a ~400GB filesystem between two systems (sending is Ubuntu, receiving is FreeBSD): one at my house, and another on a server. I don't have a particularly fast connection (50 mbit/s), so I'm looking for a way to limit the bandwidth that ZFS uses so that my internet doesn't grind to a halt for almost a day.

I'm not in a rush to have the data transferred or anything, so I'd rather be able to use my internet than have it finish faster. I don't have a way of limiting the connection speed of a single host on my router, so a software solution on either the sending or receiving end would be highly preferred.

Any help would be greatly appreciated.