diff options
Diffstat (limited to 'lib/isc/netaddr.c')
| -rw-r--r-- | lib/isc/netaddr.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/lib/isc/netaddr.c b/lib/isc/netaddr.c index dcbfba42eae88..2178c7a2a7b5b 100644 --- a/lib/isc/netaddr.c +++ b/lib/isc/netaddr.c @@ -1,5 +1,5 @@ /* - * Copyright (C) 2004, 2005, 2007, 2010-2012, 2014 Internet Systems Consortium, Inc. ("ISC") + * Copyright (C) 2004, 2005, 2007, 2010-2012, 2014, 2015 Internet Systems Consortium, Inc. ("ISC") * Copyright (C) 1999-2002 Internet Software Consortium. * * Permission to use, copy, modify, and/or distribute this software for any @@ -419,6 +419,22 @@ isc_netaddr_issitelocal(isc_netaddr_t *na) { } } +#ifndef IN_ZERONET +#define IN_ZERONET(x) (((x) & htonl(0xff000000U)) == 0) +#endif + +isc_boolean_t +isc_netaddr_isnetzero(isc_netaddr_t *na) { + switch (na->family) { + case AF_INET: + return (ISC_TF(IN_ZERONET(na->type.in.s_addr))); + case AF_INET6: + return (ISC_FALSE); + default: + return (ISC_FALSE); + } +} + void isc_netaddr_fromv4mapped(isc_netaddr_t *t, const isc_netaddr_t *s) { isc_netaddr_t *src; |