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-rw-r--r--src/vnet/ip/icmp4.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/src/vnet/ip/icmp4.c b/src/vnet/ip/icmp4.c
index 48bcf67ac4e..05262e6f8e4 100644
--- a/src/vnet/ip/icmp4.c
+++ b/src/vnet/ip/icmp4.c
@@ -101,6 +101,12 @@ format_ip4_icmp_header (u8 * s, va_list * args)
format_ip4_icmp_type_and_code, icmp->type, icmp->code,
clib_net_to_host_u16 (icmp->checksum));
+ if ((ICMP4_echo_request == icmp->type || ICMP4_echo_reply == icmp->type)
+ && sizeof (icmp[0]) + sizeof (u16) < max_header_bytes)
+ {
+ s = format (s, " id %u", clib_net_to_host_u16 (*(u16 *) (icmp + 1)));
+ }
+
return s;
}