Hi, 
We have QNX 6.5 on a Freescale P1013 based board (A21B from Duagon, formerly MEN).
When we disconnect a LAN connection and then reconnect while for example we have a ping test, we have huge delays:

64 bytes from 192.168.101.130: icmp_seq=18 ttl=255 time=0 ms
64 bytes from 192.168.101.130: icmp_seq=19 ttl=255 time=0 ms
64 bytes from 192.168.101.130: icmp_seq=24 ttl=255 time=7547 ms
64 bytes from 192.168.101.130: icmp_seq=25 ttl=255 time=6548 ms
64 bytes from 192.168.101.130: icmp_seq=26 ttl=255 time=5548 ms
64 bytes from 192.168.101.130: icmp_seq=27 ttl=255 time=4548 ms
64 bytes from 192.168.101.130: icmp_seq=28 ttl=255 time=3548 ms
64 bytes from 192.168.101.130: icmp_seq=29 ttl=255 time=2549 ms
64 bytes from 192.168.101.130: icmp_seq=30 ttl=255 time=1549 ms
64 bytes from 192.168.101.130: icmp_seq=31 ttl=255 time=549 ms
64 bytes from 192.168.101.130: icmp_seq=32 ttl=255 time=0 ms
64 bytes from 192.168.101.130: icmp_seq=33 ttl=255 time=0 ms

Also when we have pings with large size messages, when we re-connect we get  the following message:
ping: sendto: No buffer space available
ping: sendto: No buffer space available
ping: sendto: No buffer space available
.
.

And it never reconnects.
The BSP is used is similar to "Freescale P1010RDB", Any hint on how we can solve this problem?