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Schaller: The long journey towards good free video conferencingSchaller: The long journey towards good free video conferencingPosted Oct 15, 2012 21:57 UTC (Mon) by dlang (✭ supporter ✭, #313)In reply to: Schaller: The long journey towards good free video conferencing by martinfick Parent article: Schaller: The long journey towards good free video conferencing
If you use DHCP to allocate IPv6 addresses, this is possible, but the link-local addresses are defined as being created independantly of any DHCP server.
and once you get an IP address from the DHCP server, you now have a real IPv6 address that is accessible from anywhere on the Internet (unless you have a firewall or NAT device in place)
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Schaller: The long journey towards good free video conferencing Posted Oct 16, 2012 2:35 UTC (Tue) by elanthis (guest, #6227) [Link]
Link local addresses can still use service discovery on the local network to find things like an NTP server. Link local addresses basically depend on service discovery to even be useful.
Also, a DHCP server does not guarantee a binary option between public Internet connectivity or the use of a firewall/NAT. There's nothing in the world that says a DHCP server can't assign local addresses (fc00::/7) that don't route over the 'Net. You'd need a truly bad ISP for attackers to even be able to send you packets to those addresses, or receive packets from those addresses.
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