IPv6 Linux snippets
Mostly based on this Linux IPv6 HOWTO.
Adding v6 address
ip -6 addr add <ipv6address>/<prefixlength> dev <interface>
# or
ifconfig <interface> inet6 add <ipv6address>/<prefixlength>Removing v6 address
Same as adding, with "del" instead of "add".
Adding a v6 route
ip -6 route add <ipv6network>/<prefixlength> via <ipv6address>
# or
route -A inet6 add <ipv6network>/<prefixlength> gw <ipv6address> [dev <device>]