diff options
| -rw-r--r-- | vnet/vnet/ip/ping.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/vnet/vnet/ip/ping.c b/vnet/vnet/ip/ping.c index 0c25118c904..b5842a69c50 100644 --- a/vnet/vnet/ip/ping.c +++ b/vnet/vnet/ip/ping.c @@ -493,7 +493,15 @@ run_ping_ip46_address (vlib_main_t * vm, ip4_address_t * pa4, u32 n_requests = 0; ping_run_t *pr = 0; u32 ping_run_index = 0; - u16 icmp_id = rand (); + u16 icmp_id; + + static u32 rand_seed = 0; + + if (PREDICT_FALSE(!rand_seed)) + rand_seed = random_default_seed(); + + icmp_id = random_u32(&rand_seed) & 0xffff; + while (hash_get (pm->ping_run_by_icmp_id, icmp_id)) { vlib_cli_output (vm, "ICMP ID collision at %d, incrementing", icmp_id); |