* Karl Auer | 2011-03-06 09:28:06 [+1100]:
>Linux treats link local addresses as being in a /64:
>
>wlan0 [...]
> inet6 addr: fe80::222:fbff:fe54:9b80/64 Scope:Link
> [...]
Yes (Linux):
if ((st & htonl(0xFFC00000)) == htonl(0xFE800000))
return (IPV6_ADDR_LINKLOCAL | IPV6_ADDR_UNICAST |
IPV6_ADDR_SCOPE_TYPE(IPV6_ADDR_SCOPE_LINKLOCAL));
as well as *BSD:
#define IN6_IS_ADDR_LINKLOCAL(a) \
(((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0x80))
Best regards, Hagen
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