otherwise 0.0.0.0/0 is set as 0.0.0.0/255.255.255.255 on x86_64

Signed-off-by: Ulrich Weber <[email protected]>
---
 utils.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/utils.c b/utils.c
index 71a0f13..b2fbe02 100644
--- a/utils.c
+++ b/utils.c
@@ -803,7 +803,7 @@ fw3_bitlen2netmask(int family, int bits, void *mask)
                        return false;
 
                v4 = mask;
-               v4->s_addr = htonl(~((1 << (32 - abs(bits))) - 1));
+               v4->s_addr = bits ? htonl(~((1 << (32 - abs(bits))) - 1)) : 0;
 
                if (bits < 0)
                        v4->s_addr = ~v4->s_addr;
-- 
1.9.1
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