create/destroy causes all domu to briefly loose network

["Stephen M. Jones" <cirr%sdf.org@localhost>]

I've noticed in that there is a brief (about 30 second) outage across all
domu when one of the domu is created or destroyed.  This occurs even when the 
domu being created or destroyed is not on the network.

What is the cause of this and is there any work around to this behavior?
If not, is create / destroy only to be used sparingly to not affect all other hosts?

I am currently using:
xenkernel411-4.11.4nb3 Xen 4.11.x Kernel
xentools411-4.11.4nb1 Userland Tools for Xen 4.11.x

example:

pinging the IP of another domu while running 'xl create':
64 bytes from 205.166.94.127: icmp_seq=69 ttl=255 time=0.703 ms
64 bytes from 205.166.94.127: icmp_seq=70 ttl=255 time=0.698 ms
64 bytes from 205.166.94.127: icmp_seq=71 ttl=255 time=0.868 ms  <-- another domu is loses network 
64 bytes from 205.166.94.127: icmp_seq=102 ttl=255 time=0.674 ms  <-- the affected domu is back on the network
64 bytes from 205.166.94.127: icmp_seq=103 ttl=255 time=0.550 ms
64 bytes from 205.166.94.127: icmp_seq=104 ttl=255 time=0.638 ms
64 bytes from 205.166.94.127: icmp_seq=105 ttl=255 time=0.736 ms
[...]
continued pinging of ip of another domu while running 'xl destroy'
64 bytes from 205.166.94.127: icmp_seq=127 ttl=255 time=0.763 ms
64 bytes from 205.166.94.127: icmp_seq=128 ttl=255 time=0.600 ms
64 bytes from 205.166.94.127: icmp_seq=129 ttl=255 time=2.158 ms
64 bytes from 205.166.94.127: icmp_seq=130 ttl=255 time=0.662 ms <-- another domu loses network
64 bytes from 205.166.94.127: icmp_seq=161 ttl=255 time=0.889 ms <-- the affected domu is back on the network
64 bytes from 205.166.94.127: icmp_seq=162 ttl=255 time=0.698 ms
64 bytes from 205.166.94.127: icmp_seq=163 ttl=255 time=0.667 ms
^C
----9front45.sdf.org PING Statistics----
164 packets transmitted, 104 packets received, 36.6% packet loss
round-trip min/avg/max/stddev = 0.512/0.910/4.796/0.732 ms