X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Fshared%2Fsocket-util.c;h=6f4979853eae0967852097d9f0a28f5fe9f4bb2d;hb=a1948c7bfeb87b54bc7715a44490c01593ee6e23;hp=f8c6795e7c8155644496823b4884093b240d65eb;hpb=059f6c42b744a18d0deec0c79a9e0730ec6c1c76;p=elogind.git

diff --git a/src/shared/socket-util.c b/src/shared/socket-util.c
index f8c6795e7..6f4979853 100644
--- a/src/shared/socket-util.c
+++ b/src/shared/socket-util.c
@@ -695,7 +695,7 @@ int in_addr_prefix_intersect(
                 uint32_t x, nm;
 
                 x = be32toh(a->in.s_addr ^ b->in.s_addr);
-                nm = 0xFFFFFFFFUL << (32 - m);
+                nm = (m == 0) ? 0 : 0xFFFFFFFFUL << (32 - m);
 
                 return (x & nm) == 0;
         }