> ok, do you have an IP address configured on br0 on your dom0? I can't
> see an entry for 10.0.42.1.
Hmm, yes, I think. If I do "ip a" on the host I have:
...
3: br0: <BROADCAST,MULTICAST,PROMISC,UP,LOWER_UP> mtu 1500 qdisc noqueue
state UP group default qlen 1000
link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff
inet 10.0.42.1/24 brd 10.0.42.255 scope global br0
valid_lft forever preferred_lft forever
inet6 fe80::6498:25ff:fef1:2724/64 scope link
valid_lft forever preferred_lft forever
...
and from the linux domU I can ping / connect to 10.0.42.1
And here's attached the tcpdump log with your command. Following
Vittorio's advice, I manually set a mac address for the unikernel
(00:16:3e:01:23:45), but that doesn't seem effectual for now.
(00:16:3e:ad:b8:67/10.0.42.20/debtest is my linux domU)
# tcpdump -e -i br0 host 10.0.42.20
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on br0, link-type EN10MB (Ethernet), capture size 262144 bytes
13:49:35.375100 00:16:3e:ad:b8:67 (oui Unknown) > Broadcast, ethertype ARP (0x0806), length 42: Request who-has 10.0.42.20 tell debtest, length 28
13:49:35.375889 00:16:3e:01:23:45 (oui Unknown) > 00:16:3e:ad:b8:67 (oui Unknown), ethertype ARP (0x0806), length 42: Reply 10.0.42.20 is-at 00:16:3e:01:23:45 (oui Unknown), length 28
13:49:35.376158 00:16:3e:ad:b8:67 (oui Unknown) > 00:16:3e:01:23:45 (oui Unknown), ethertype IPv4 (0x0800), length 74: debtest.57524 > 10.0.42.20.2345: Flags [S], seq 3709662095, win 29200, options [mss 1460,sackOK,TS val 84833768 ecr 0,nop,wscale 5], length 0
13:49:36.395414 00:16:3e:ad:b8:67 (oui Unknown) > 00:16:3e:01:23:45 (oui Unknown), ethertype IPv4 (0x0800), length 74: debtest.57524 > 10.0.42.20.2345: Flags [S], seq 3709662095, win 29200, options [mss 1460,sackOK,TS val 84834024 ecr 0,nop,wscale 5], length 0
13:49:38.411324 00:16:3e:ad:b8:67 (oui Unknown) > 00:16:3e:01:23:45 (oui Unknown), ethertype IPv4 (0x0800), length 74: debtest.57524 > 10.0.42.20.2345: Flags [S], seq 3709662095, win 29200, options [mss 1460,sackOK,TS val 84834528 ecr 0,nop,wscale 5], length 0
13:49:42.635493 00:16:3e:ad:b8:67 (oui Unknown) > 00:16:3e:01:23:45 (oui Unknown), ethertype IPv4 (0x0800), length 74: debtest.57524 > 10.0.42.20.2345: Flags [S], seq 3709662095, win 29200, options [mss 1460,sackOK,TS val 84835584 ecr 0,nop,wscale 5], length 0
13:49:50.827323 00:16:3e:ad:b8:67 (oui Unknown) > 00:16:3e:01:23:45 (oui Unknown), ethertype IPv4 (0x0800), length 74: debtest.57524 > 10.0.42.20.2345: Flags [S], seq 3709662095, win 29200, options [mss 1460,sackOK,TS val 84837632 ecr 0,nop,wscale 5], length 0
13:50:06.955300 00:16:3e:ad:b8:67 (oui Unknown) > 00:16:3e:01:23:45 (oui Unknown), ethertype IPv4 (0x0800), length 74: debtest.57524 > 10.0.42.20.2345: Flags [S], seq 3709662095, win 29200, options [mss 1460,sackOK,TS val 84841664 ecr 0,nop,wscale 5], length 0
13:50:41.003312 00:16:3e:ad:b8:67 (oui Unknown) > 00:16:3e:01:23:45 (oui Unknown), ethertype IPv4 (0x0800), length 74: debtest.57524 > 10.0.42.20.2345: Flags [S], seq 3709662095, win 29200, options [mss 1460,sackOK,TS val 84850176 ecr 0,nop,wscale 5], length 0
13:50:46.123302 00:16:3e:ad:b8:67 (oui Unknown) > 00:16:3e:01:23:45 (oui Unknown), ethertype ARP (0x0806), length 42: Request who-has 10.0.42.20 tell debtest, length 28
13:50:47.147420 00:16:3e:ad:b8:67 (oui Unknown) > 00:16:3e:01:23:45 (oui Unknown), ethertype ARP (0x0806), length 42: Request who-has 10.0.42.20 tell debtest, length 28
13:50:48.171465 00:16:3e:ad:b8:67 (oui Unknown) > 00:16:3e:01:23:45 (oui Unknown), ethertype ARP (0x0806), length 42: Request who-has 10.0.42.20 tell debtest, length 28
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