use P_PKTINFO or IP_SENDSRCADDR, but not both

diff --git a/src/lib/udpfromto.c b/src/lib/udpfromto.c
index ce0147da326582973dbbc5986b7dfabb8e037822..d54d8a69c1338904b69468f191ad2be781902374 100644 (file)
--- a/src/lib/udpfromto.c
+++ b/src/lib/udpfromto.c
@@ -405,9 +405,8 @@ int sendfromto(int s, void *buf, size_t len, int flags,
                pkt = (struct in_pktinfo *) CMSG_DATA(cmsg);
                memset(pkt, 0, sizeof(*pkt));
                pkt->ipi_spec_dst = s4->sin_addr;
-#  endif
 
-#  ifdef IP_SENDSRCADDR
+#  elif defined(IP_SENDSRCADDR)
                struct cmsghdr *cmsg;
                struct in_addr *in;