This update of radvd fixes the following security flaws:

- arbitrary file overwrite flaw through unsanitized
interface names (CVE-2011-3602),
- missing return value checks in privsep_init() which could
cause radvd to keep running with root privileges
(CVE-2011-3603),
- buffer overread flaws in the process_ra() function
(CVE-2011-3604),
- temporary denial of service flaw triggered with a flood
of ND_ROUTER_SOLICIT (CVE-2011-3605)