Disabling link local IPv6 addresses

[nullv at gmx.com]

Hi, 

I've been using radvd to set up a group of clients using RA broadcasts. I also have a group of client PCs using static IPv6 in a different ::/64 subnet altogether but on the same physical network. The two networks have to remain separate for security reasons.

The problem I'm having is that clients on the two separate networks can still "see" each other through the automatic link-local (fe80::) addresses. I've added the line IPv6_AUTOCONF=no to network & my ifcfg-* files but I can't seem to stop this behaviour. 

Any hints, tricks, hacks, gotchas?

Thanks