diff options
Diffstat (limited to 'lib/prefix.c')
| -rw-r--r-- | lib/prefix.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/lib/prefix.c b/lib/prefix.c index e67184f52..edfc22fb4 100644 --- a/lib/prefix.c +++ b/lib/prefix.c @@ -301,6 +301,18 @@ static const struct in6_addr maskbytes6[] = { #define MASKBIT(offset) ((0xff << (PNBBY - (offset))) & 0xff) +int is_zero_mac(struct ethaddr *mac) +{ + int i = 0; + + for (i = 0; i < ETH_ALEN; i++) { + if (mac->octet[i]) + return 0; + } + + return 1; +} + unsigned int prefix_bit(const u_char *prefix, const u_char prefixlen) { unsigned int offset = prefixlen / 8; |