bgpd: justify checks for IPv4 class D/E
* lib/prefix.h
* IPV4_CLASS_DE(): make consistent with counterpart macros
* bgp_packet.c
* bgp_open_receive(): test using macro instead of ">="
* bgp_route.c
* bgp_update_rsclient(): idem
* bgp_update_main(): idem
diff --git a/lib/prefix.h b/lib/prefix.h
index 12c0d07..dab4202 100644
--- a/lib/prefix.h
+++ b/lib/prefix.h
@@ -112,7 +112,7 @@
#define IPV4_NET0(a) ((((u_int32_t) (a)) & 0xff000000) == 0x00000000)
#define IPV4_NET127(a) ((((u_int32_t) (a)) & 0xff000000) == 0x7f000000)
#define IPV4_LINKLOCAL(a) ((((u_int32_t) (a)) & 0xffff0000) == 0xa9fe0000)
-#define IPV4_CLASS_DE(a) ((u_int32_t) (a) >= 0xe0000000)
+#define IPV4_CLASS_DE(a) ((((u_int32_t) (a)) & 0xe0000000) == 0xe0000000)
/* Max bit/byte length of IPv6 address. */
#define IPV6_MAX_BYTELEN 16