Comment 2 for bug 1800655

when running tcpdump on the container itself

i see this:

listening on eth1, link-type EN10MB (Ethernet), capture size 262144 bytes
17:44:02.472316 IP aio1-utility-container-603e401d.openstack.local.54720 > aio1.openstack.local.intermapper: Flags [S], seq 1614563767, win 29200, options [mss 1460,sackOK,TS val 20158751 ecr 0,nop,wscale 7], length 0
17:44:02.472445 IP aio1.openstack.local > aio1-utility-container-603e401d.openstack.local: ICMP host aio1.openstack.local unreachable - admin prohibited, length 68
17:44:03.474227 IP aio1-utility-container-603e401d.openstack.local.54720 > aio1.openstack.local.intermapper: Flags [S], seq 1614563767, win 29200, options [mss 1460,sackOK,TS val 20159754 ecr 0,nop,wscale 7], length 0
17:44:03.474335 IP aio1.openstack.local > aio1-utility-container-603e401d.openstack.local: ICMP host aio1.openstack.local unreachable - admin prohibited, length 68
17:44:07.480281 ARP, Request who-has aio1.openstack.local tell aio1-utility-container-603e401d.openstack.local, length 28
17:44:07.480301 ARP, Request who-has aio1-utility-container-603e401d.openstack.local tell aio1.openstack.local, length 28
17:44:07.480350 ARP, Reply aio1-utility-container-603e401d.openstack.local is-at 00:16:3e:1a:5f:db (oui Unknown), length 28
17:44:07.480342 ARP, Reply aio1.openstack.local is-at c6:1f:3a:d2:c0:37 (oui Unknown), length 28