Adam Spragg <[email protected]> writes: >> For my IPv6-only PPPoE uplink, I've been using the following >> lines in a file in "/etc/ppp/peers/" successfully for several >> >> years now: >> noip >> +ipv6 >> ipv6 ::abcd:1 > > If I use the option "ipv6 ::1" then I just get the ipv6 address "fe80::1/10" > instead of "fe80::4576:73e7:b3f5:eda6/10" on the interface.
That's what you've asked it to do. IP6CP (the IPv6 network control protocol in PPP) does not negtioate addresses or prefixes. That is left for SLAAC or DHCPv6. All it does negotiate is the interface identifiers, i.e. the lower 64 bits of the address. This is also documented in the pppd man page. So you need to run either SLAAC or DHCPv6 on top of the PPP link if you want a global address for it. Although you probably don't need it... Note that, just like IPv4 addresses, your ISP may choose to force you to use a specific interface identifier. So any specific setting you use may be rejected by the other end and cause a failure. It obviously did not in your case, but that's just luck. I would not recommend end users setting specific interface identifiers. Using "+ipv6" (and optionally "noip" if you don't want dual stack) should be all that's necessary. We had to force interface identifiers for our users because it turned out that the DHCPv6 server would use this to match its leases in addition to the DUID. So if your PPP link went down and came up with a new interface identifier (which is the Linux default at least), then the DHCPv6 server would refuse any requests from that user until the lease expired (unless the DHCPv6 client had freed the lease before the link went down, shich of course will not happen in the common case). The solution was to issue specific per-user interface identifiers. Bjørn -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected] Archive: http://lists.debian.org/[email protected]
