We set the port to the ICMP id on the sendto() address when using ICMP
ping sockets. However, this has no effect: the ICMP id the kernel
uses is determined only by the "port" on the socket's *bound* address
(which is constructed inside sock_l4(), using the id we also pass to
it).
Signed-off-by: David Gibson <david(a)gibson.dropbear.id.au>
---
icmp.c | 4 ----
1 file changed, 4 deletions(-)
diff --git a/icmp.c b/icmp.c
index 325dfb0..d3e5bc6 100644
--- a/icmp.c
+++ b/icmp.c
@@ -182,8 +182,6 @@ int icmp_tap_handler(const struct ctx *c, uint8_t pif, int af,
if (ih->type != ICMP_ECHO && ih->type != ICMP_ECHOREPLY)
return 1;
- sa.sin_port = ih->un.echo.id;
-
iref.id = id = ntohs(ih->un.echo.id);
if ((s = icmp_id_map[V4][id].sock) <= 0) {
@@ -229,8 +227,6 @@ int icmp_tap_handler(const struct ctx *c, uint8_t pif, int af,
if (ih->icmp6_type != 128 && ih->icmp6_type != 129)
return 1;
- sa.sin6_port = ih->icmp6_identifier;
-
iref.id = id = ntohs(ih->icmp6_identifier);
if ((s = icmp_id_map[V6][id].sock) <= 0) {
s = sock_l4(c, AF_INET6, IPPROTO_ICMPV6,
--
2.43.0