Some doubt regarding getaddrinfo()

[sumanth <sumantk2 at linux dot vnet dot ibm dot com>]

Hi all, i had a doubt w.r.t to getaddrinfo()

i had configured link-local address and site-local address as follows.

ifconfig eth0 inet6 add fe80::1/64
ifconfig eth0 inet6 add fec0::1/10

Now my /etc/hosts contains the following :
fe80::2     server.org
fec0::2     server.org

. For the destination address selection , in getaddrinfo.c ,  gaih_inet
will return the set of available destination address( not sorted yet ) .
Then if we have 2 addresses , for eg : site-local and link-local , then
i see following code flow: <in getaddrinfo.c :  __socket (af,
SOCK_DGRAM, IPPROTO_IP) , then __connect() and then __getsockname
inorder to get the source address suitable from the kernel ( gets filled
to results[i].source_addr .>. Here when i see netstat | grep -i udp , i
see that connection has been established . However the destination is
unreachable.

 So my questions:
1)  how can  connect() succeed to fec0::2 for example which is not
reachable from my side. < have not configured fec0::2 in any other
machines. >  . In getaddrinfo.c , it is mentioned that :
        /* We overwrite the type with SOCK_DGRAM since we do not
                 want connect() to connect to the other side.  If we
                 cannot determine the source address remember this
                 fact.  */   < --- Didnt get properly what it means.

#netstat | grep -i udp
udp        0      0 fec0::1:34236               server.org:http       
ESTABLISHED

2) However connect() fails in case of link-local address and hence
results->got_source_addr is still false .


Any thoughts ? . This may be a simple question . But any help would be
good. 


Thank you,
Sumanth K