Sorry if this is a known problem or I am doing something trivial wrong. I did this: # ifconfig sit0 up # ifconfig sit0 tunnel ::10.0.0.1 SIOCSIFDSTADDR: No buffer space available # What's wrong? I am using 2.4.0-test8 for this. The same chain of commands works without error on 2.2.17 on another machine. I am using ifconfig 1.40 from net-tools 1.57. Felix - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/