On Oct 28, 2003, at 9:41 PM, Tony Hain wrote:
- does this seem like a problem, that is, should getaddrinfo() + AI_ADDRCONFIG perform AAAA DNS queries etc. if the node only has v6 link-local/loopback addresses?
It is not a problem if you follow addr selection rules and prefer matching
scopes. This will cause IPv4 to be used if there is only a LL, trying to
talk to a AAAA global.
Not always. read our 2 drafts, this is clearly explained. If you have a case where
IPv6 src= LL, IPv6 dst = GL
IPv4 src= SL (rfc1918), IPv4 DST = GL
(This is a typical case of a host behind a NAT box)
Default address selection will choose the impossible v6 path.
- Alain.
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