Summary: Please include aiccu and radvd in grml, they are very useful for 
setting up IPv6 connectivity.

aiccu is the management program for IPv6-in-IPv4 tunnels that are used with the 
tunnel-broker sixxs.net who are quite popular. It works almost with every IPv4 
setup there is. http://www.sixxs.net/tools/aiccu

radvd is a daemon that generates router-advertisement packets and is typically 
running on the machine handling the tunnel-endpoint so that other machines in 
the lan can pick up their networok-configuration automatically. 
http://www.litech.org/radvd/

I compiled them from source on a grml-1.1/x86 and stripped binaries and 
manpages together are 145kB uncompressed, 72kB after gzip -9.