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| author | Kai Blin <kai@samba.org> | 2011-09-24 18:18:14 -0700 |
|---|---|---|
| committer | Kai Blin <kai@samba.org> | 2011-09-24 21:46:06 -0700 |
| commit | b02bbf237cfd36cd736cefc78f1e3ba3278dc7bf (patch) | |
| tree | 7c2763a28aa44a08a48c78e0fde6c82dc6797ea8 /lib/util/util_net.c | |
| parent | 7466612392272e70c60114fc035b62b16f6194aa (diff) | |
| download | samba-b02bbf237cfd36cd736cefc78f1e3ba3278dc7bf.tar.gz samba-b02bbf237cfd36cd736cefc78f1e3ba3278dc7bf.tar.bz2 samba-b02bbf237cfd36cd736cefc78f1e3ba3278dc7bf.zip | |
net: Don't register link local addresses with DNS
Diffstat (limited to 'lib/util/util_net.c')
| -rw-r--r-- | lib/util/util_net.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/lib/util/util_net.c b/lib/util/util_net.c index 23d25acab9..139c9d42bc 100644 --- a/lib/util/util_net.c +++ b/lib/util/util_net.c @@ -432,6 +432,29 @@ void zero_ip_v4(struct in_addr *ip) ZERO_STRUCTP(ip); } +bool is_linklocal_addr(const struct sockaddr_storage *pss) +{ +#ifdef HAVE_IPV6 + if (pss->ss_family == AF_INET6) { + const struct in6_addr *pin6 = + &((const struct sockaddr_in6 *)pss)->sin6_addr; + return IN6_IS_ADDR_LINKLOCAL(pin6); + } +#endif + if (pss->ss_family == AF_INET) { + const struct in_addr *pin = + &((const struct sockaddr_in *)pss)->sin_addr; + struct in_addr ll_addr; + struct in_addr mask_addr; + + /* 169.254.0.0/16, is link local, see RFC 3927 */ + ll_addr.s_addr = 0xa9fe0000; + mask_addr.s_addr = 0xffff0000; + return same_net_v4(*pin, ll_addr, mask_addr); + } + return false; +} + /** * Convert an IPv4 struct in_addr to a struct sockaddr_storage. */ |