Daniel,
The snoop output you show below doesn't look like DHCP traffic at all.
You might want to do a "snoop dhcp" to limit the packets captured or use
the -m option with virt-install to explicitly set a specific MAC address
on your new domain which you could then "snoop ether <addr>" on.
--joe
Daniel wrote:
Daniel wrote:
Hi,
I'm having trouble creating a guest domain that
uses dhcp for
its address. I'm wondering if maybe someone can
point out something
simple I may be missing.
So here's my setup. Everything is all on one
machine. We're running
a dhcp server within a zone. I've confirmed that
the server is up,
and that it is handing out addresses. I have
another zone set up that
uses it, and I can halt and boot that zone and it
gets an ip address
from the server. So I can do this with a zone but
not with a guest domU yet.
Have you tried using a VNIC in the zone with the dhcp
server
(i.e. exclusive IP stack)? I would expect that this
will work,
although I'm not sure what the problem would be.
e.g.
# dladm create-vnic -l e1000g0 dhcp-server
...
zonecfg:dhcp> set ip-type=exclusive
zonecfg:dhcp> add net
zonecfg:dhcp:net> set physical=dhcp-server
zonecfg:dhcp:net> end
Yes. The dhcp server zone is using a vnic and it's bridged over the same
interface as the guest domU.
I've tried two approaches to getting the domU to
get an IP address. One
was to run a virt-install in which I explicitly
choose to have the
machine networked using dhcp. I bridge it over the
same network interface
that the zones are using. Unfortunately it always
times out during the
install and tells me it could not find a dhcp
server.
The other thing I tried, and I think maybe this was
misguided, it might
only work for zones, but I installed a guest image
without networking
and then edited the sysidcfg file to enable dhcp,
and then rebooted
the guest. That didn't seem to work either.
I hope you can understand my rambling, but is there
anything that comes
to mind that I may be missing? Thanks for any
help.
can you do a dladm show-link and then snoop on the
vnic used for
the guest?
here's a sample of the snoop output during the virt-install at the step where
it looks for the dhcp server.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
r69s27.SFBay.Sun.COM -> (broadcast) ARP C Who is 10.5.184.53,
sca11bxvm01.SFBay.Sun.COM ?
omalley-iron6.SFBay.Sun.COM ->
reserved-multicast-range-NOT-delegated.example.com UDP IP fragment ID=48366
Offset=0 MF=1 TOS=0x0 TTL=1
omalley-iron6.SFBay.Sun.COM ->
reserved-multicast-range-NOT-delegated.example.com UDP IP fragment ID=48366
Offset=1480 MF=1 TOS=0x0 TTL=1
omalley-iron6.SFBay.Sun.COM ->
reserved-multicast-range-NOT-delegated.example.com UDP IP fragment ID=48366
Offset=2960 MF=0 TOS=0x0 TTL=1
ccdev-sca11-05-z03.SFBay.Sun.COM ->
reserved-multicast-range-NOT-delegated.example.com UDP IP fragment ID=7820
Offset=0 MF=1 TOS=0x0 TTL=1
ccdev-sca11-05-z03.SFBay.Sun.COM ->
reserved-multicast-range-NOT-delegated.example.com UDP IP fragment ID=7820
Offset=1480 MF=1 TOS=0x0 TTL=1
ccdev-sca11-05-z03.SFBay.Sun.COM ->
reserved-multicast-range-NOT-delegated.example.com UDP IP fragment ID=7820
Offset=2960 MF=0 TOS=0x0 TTL=1
omalley4.SFBay.Sun.COM -> reserved-multicast-range-NOT-delegated.example.com
UDP IP fragment ID=24383 Offset=0 MF=1 TOS=0x0 TTL=1
omalley4.SFBay.Sun.COM -> reserved-multicast-range-NOT-delegated.example.com
UDP IP fragment ID=24383 Offset=1480 MF=1 TOS=0x0 TTL=1
omalley4.SFBay.Sun.COM -> reserved-multicast-range-NOT-delegated.example.com
UDP IP fragment ID=24383 Offset=2960 MF=0 TOS=0x0 TTL=1
omalley-iron4.SFBay.Sun.COM ->
reserved-multicast-range-NOT-delegated.example.com UDP IP fragment ID=48566
Offset=0 MF=1 TOS=0x0 TTL=1
omalley-iron4.SFBay.Sun.COM ->
reserved-multicast-range-NOT-delegated.example.com UDP IP fragment ID=48566
Offset=1480 MF=1 TOS=0x0 TTL=1
omalley-iron4.SFBay.Sun.COM ->
reserved-multicast-range-NOT-delegated.example.com UDP IP fragment ID=48566
Offset=2960 MF=0 TOS=0x0 TTL=1
ccdev-sca11-05-z03.SFBay.Sun.COM ->
reserved-multicast-range-NOT-delegated.example.com UDP IP fragment ID=7821
Offset=0 MF=1 TOS=0x0 TTL=1
ccdev-sca11-05-z03.SFBay.Sun.COM ->
reserved-multicast-range-NOT-delegated.example.com UDP IP fragment ID=7821
Offset=1480 MF=1 TOS=0x0 TTL=1
ccdev-sca11-05-z03.SFBay.Sun.COM ->
reserved-multicast-range-NOT-delegated.example.com UDP IP fragment ID=7821
Offset=2960 MF=0 TOS=0x0 TTL=1
ccdev-sca11-06.SFBay.Sun.COM -> 239.100.1.1 UDP D=9090 S=64049 LEN=84
omalley1.SFBay.Sun.COM -> reserved-multicast-range-NOT-delegated.example.com
UDP IP fragment ID=49801 Offset=0 MF=1 TOS=0x0 TTL=1
omalley1.SFBay.Sun.COM -> reserved-multicast-range-NOT-delegated.example.com
UDP IP fragment ID=49801 Offset=1480 MF=1 TOS=0x0 TTL=1
omalley1.SFBay.Sun.COM -> reserved-multicast-range-NOT-delegated.example.com
UDP IP fragment ID=49801 Offset=2960 MF=0 TOS=0x0 TTL=1
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Not sure that this helps. but thanks for any help.
-Dan
Thanks,
MRJ
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