Fix checksum generation

diff --git a/src/socket4.c b/src/socket4.c
index f1bdf5ef805ad19d0cf6160fd0207781541b8ae0..ac760fbb80d157696c2419b42038d62fbf13bd92 100644 (file)
--- a/src/socket4.c
+++ b/src/socket4.c
@@ -96,6 +96,7 @@ int socket_sendto_ping_ipv4(int s, struct sockaddr *saddr, socklen_t saddr_len,
 
     icp->icmp_type = ICMP_ECHO;
     icp->icmp_code = 0;
+    icp->icmp_cksum = 0;
     icp->icmp_seq = htons(icmp_seq_nr);
     icp->icmp_id = htons(icmp_id_nr);