Sylvain:
in fact, the lwip mask was outside range, it was "255.255.255.0". Then I replaced it by "255.255.0.0". The lwip address configuration (updated):
- gw: 169.254.6.1
- ip: 169.254.6.2
-mask: 255.255.0.0
Reboot the two machine, setup the VM#1 bridge, etc.
But the problem was not solved... No ping reply still.
Below the traces reports (on VM#1) :
>>>>> tcpdump br0:
address@hidden norberto]# tcpdump -i br0 -v
tcpdump: listening on br0, link-type EN10MB (Ethernet), capture size 65535 bytes
09:29:19.439073 ARP, Ethernet (len 6), IPv4 (len 4), Request who-has 169.254.6.2 tell 169.254.4.39, length 46
09:29:21.439670 ARP, Ethernet (len 6), IPv4 (len 4), Request who-has 169.254.6.2 tell 169.254.4.39, length 46
09:29:22.439580 ARP, Ethernet (len 6), IPv4 (len 4), Request who-has 169.254.6.2 tell 169.254.4.39, length 46
09:29:23.442344 ARP, Ethernet (len 6), IPv4 (len 4), Request who-has 169.254.6.2 tell 169.254.4.39, length 46
...
>>>>> tcpdump tap0:
address@hidden norberto]# tcpdump -i tap0 -v
tcpdump: WARNING: tap0: no IPv4 address assigned
tcpdump: listening on tap0, link-type EN10MB (Ethernet), capture size 65535 bytes
09:30:18.473570 ARP, Ethernet (len 6), IPv4 (len 4), Request who-has 169.254.6.2 tell 169.254.4.39, length 46
09:30:18.474639 ARP, Ethernet (len 6), IPv4 (len 4), Reply 169.254.6.2 is-at 01:02:03:04:05:06 (oui Unknown), length 46
09:30:19.476042 ARP, Ethernet (len 6), IPv4 (len 4), Request who-has 169.254.6.2 tell 169.254.4.39, length 46
09:30:19.476560 ARP, Ethernet (len 6), IPv4 (len 4), Reply 169.254.6.2 is-at 01:02:03:04:05:06 (oui Unknown), length 46
...
>>>>> lwip console:
...
tcpip_thread: PACKET 0x3bd754
ethernet_input: dest:ff:ff:ff:ff:ff:ff, src:08:00:27:a8:38:00, type:806
etharp_update_arp_entry: 169.254.4.39 - 08:00:27:a8:38:00
etharp_find_entry: found matching entry 0
etharp_update_arp_entry: updating stable entry 0
etharp_arp_input: incoming ARP request
etharp_arp_input: replying to ARP request for our IP address
tcpip_thread: PACKET 0x3bd754
ethernet_input: dest:ff:ff:ff:ff:ff:ff, src:08:00:27:a8:38:00, type:806
etharp_update_arp_entry: 169.254.4.39 - 08:00:27:a8:38:00
etharp_find_entry: found matching entry 0
etharp_update_arp_entry: updating stable entry 0
etharp_arp_input: incoming ARP request
etharp_arp_input: replying to ARP request for our IP address
tcpip_thread: PACKET 0x3bd754
ethernet_input: dest:ff:ff:ff:ff:ff:ff, src:08:00:27:a8:38:00, type:806
etharp_update_arp_entry: 169.254.4.39 - 08:00:27:a8:38:00
etharp_find_entry: found matching entry 0
etharp_update_arp_entry: updating stable entry 0
etharp_arp_input: incoming ARP request
etharp_arp_input: replying to ARP request for our IP address
...
Thanks!
Norberto