Having set up a virtual ethernet device 'veth0' and attached its peer 'veth1' to 'br-lan', why do I see output like this:
root@OpenWrt:~# tcpdump -vpni veth0
tcpdump: listening on veth0, link-type EN10MB (Ethernet), capture size 262144 bytes
09:18:36.138243 ARP, Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.1.86 tell 192.168.1.168, length 28
09:18:36.138334 ARP, Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.1.213 tell 192.168.1.168, length 28
09:18:36.151923 ARP, Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.1.220 tell 192.168.1.220, length 28
09:18:36.638191 ARP, Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.1.195 tell 192.168.1.168, length 28
09:18:37.138213 ARP, Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.1.86 tell 192.168.1.168, length 28
09:18:37.138278 ARP, Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.1.213 tell 192.168.1.168, length 28
09:18:37.460291 IP (tos 0x0, ttl 255, id 55391, offset 0, flags [none], proto UDP (17), length 216)
192.168.1.128.49154 > 255.255.255.255.6667: UDP, length 188
09:18:37.490221 IP (tos 0x0, ttl 255, id 36220, offset 0, flags [none], proto UDP (17), length 203)
192.168.1.192.49177 > 255.255.255.255.6666: UDP, length 175
09:18:37.638173 ARP, Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.1.195 tell 192.168.1.168, length 28
09:18:37.967175 IP (tos 0x0, ttl 255, id 31522, offset 0, flags [none], proto UDP (17), length 203)
192.168.1.119.49160 > 255.255.255.255.6666: UDP, length 175
09:18:38.006608 IP (tos 0x0, ttl 255, id 6199, offset 0, flags [none], proto UDP (17), length 203)
192.168.1.191.49178 > 255.255.255.255.6666: UDP, length 175
09:18:38.076026 IP (tos 0x0, ttl 255, id 30887, offset 0, flags [none], proto UDP (17), length 203)
192.168.1.156.49159 > 255.255.255.255.6666: UDP, length 175
09:18:38.796784 IP (tos 0x0, ttl 255, id 8304, offset 0, flags [none], proto UDP (17), length 216)
192.168.1.179.49154 > 255.255.255.255.6667: UDP, length 188
09:18:39.828319 IP (tos 0x0, ttl 255, id 59972, offset 0, flags [none], proto UDP (17), length 216)
192.168.1.120.49154 > 255.255.255.255.6667: UDP, length 188
09:18:39.968981 ARP, Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.1.120 tell 192.168.1.120, length 28
09:18:40.404731 IP (tos 0x0, ttl 255, id 59636, offset 0, flags [none], proto UDP (17), length 216)
192.168.1.220.49154 > 255.255.255.255.6667: UDP, length 188
In particular, why am I seeing many entries with destination '255.255.255.255.6666'?
I was rather expecting to see what is on 'br-lan' because 'veth1' is included within the bridge and so 'veth0' should show what 'veth1' sees, no?