Hi all,
Now I have a question about the macro of IN6_IS_ADDR_LINKLOCAL.
Accroding KAME implementation, in kame/sys/netinet6/in6.h,
IN6_IS_ADDR_LINKLOCAL is defined as:
#define IN6_IS_ADDR_LINKLOCAL(a) \
(((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0x80))
In this case, the linklocal address would be
in the range of 'fe80:' - 'febf:'.
fe80 : 1111 1110 1000 0000
febf : 1111 1110 1011 1111
On the other hand, according to 2.5.6 of RFC3513, link local address
is defined as:
| 10 |
| bits | 54 bits | 64 bits |
+----------+-------------------------+----------------------------+
|1111111010| 0 | interface ID |
+----------+-------------------------+----------------------------+
In this case, the linklocal address must be 'fe80:0:0:0::/64'.
Does anybody know why KAME implementation doesn't verify if 54 bits is
zero.
Thanks,
YT
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