Re: IP weirdness

2005-08-08 Thread Dave Jones

Well, in that case, Lutz, we'll all just blame you then. :-)

DJ

Lutz Hamann wrote:

Explanation accepted, Dave !

And I should know it - because I am one of those (admins) :-)

I always use the $TTL  86400  (default) in our z/OS BIND9-
implementations 


  ciao   Lutz

-
Lutz  Hamann
BETA Systems  Software AG
z/OS  System Engineering
-



 Dave Jones
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       Re: IP weirdness

 08.08.2005 14:32


 Please respond to
 Linux on 390 Port
 <[EMAIL PROTECTED]
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You're welcome, Lutz.

There was a discussion over the weekend on the VM-ESA list about why it
takes so long for DNS updates to propagate. It has to do with the TTL
(time to live) values set by various DNS administrators.

Have a good week.

DJ

Lutz Hamann wrote:


Thank you, Dave ...

I could never imagine that those DNS-updates take more than
2 days :-)  But let's wait  ...

But at least I can acces the site via their IP-address.


 ciao  Lutz


-
Lutz  Hamann
BETA Systems  Software AG
z/OS  System Engineering
-



Dave Jones
<[EMAIL PROTECTED]
are.com>


To


Sent by: Linux on LINUX-390@VM.MARIST.EDU
390 Port


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IST.EDU>


Subject


  Re: IP weirdness

08.08.2005 14:12


Please respond to
Linux on 390 Port
<[EMAIL PROTECTED]
IST.EDU>






Hi, Lutz.

www.vm.ibm.com has moved from 204.146.134.198 to 204.146.134.18.

DNS updates are working their way through the Internet, so it's not just
a German/European problem.


DJ

Lutz Hamann wrote:



Thank you for your explanation and the URL, Vic.

I'd like to check it - if www.vm.ibm.com goes online again :-)
It seems to be off-line since last Friday or Saturday :-(

Does anybody know the reason - or is it only specific German/European
problem ?


ciao  Lutz

-
Lutz  Hamann
BETA Systems  Software AG
z/OS  System Engineering
-



   Vic Cross
   <[EMAIL PROTECTED]
   au>


To



   Sent by: Linux on LINUX-390@VM.MARIST.EDU
   390 Port


cc



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   IST.EDU>


Subject



 Re: IP weirdness

   06.08.2005 16:24


   Please respond to
   Linux on 390 Port
   <[EMAIL PROTECTED]
   IST.EDU>






On Saturday 06 August 2005 04:38, Neale Ferguson wrote:
NF> I have a guest LAN that connects a number of guests.

NF> All but one of the guests can talk to each other, except one
NF> (I'll call X) which can only talk to the default gateway. If I ping


the



NF> others from X I get no response. The same goes when I go from the any
NF> other of the guests except R to X.

NF> We are z/VM 4.4 0404. Guest X is SLES9 SP2, Guest R is SLES7, other
NF> guests are Debian.

There are a few VMLAN fixes out since 0404RSU.  From recent experience


I'd



suggest you get right up to date and try again (the qeth driver on the
guests
other than X might need an update as well, although it strikes me as odd
that
the SLES 7 system works talking to the SLES 9 SP2 given that its qeth is
probably older than the Debians'...).

The z/VM team maintains an excellent resource that talks about (among


other



things) z/VM maintenance levels in support of virtual networking:

   http://www.vm.ibm.com/virtualnetwork

Look for the "Virtual Switch and Guest LAN CP Maintenance levels" link.

NF> The other weirdness I see is that all the guests have a subnet mask


of



NF> 255.255.255.192 but Q LAN DETAILS reports everyone as 255.255.255.0.

No need to be concerned about this.  At earlier levels the display shows
the
natural network mask (i.e. as if you weren't subnetting) instead of the
actual subnet mask in use.  On z/VM 5.1 the subnet mask display is


removed



(replaced by the MAC address, like the multicast display).

Chee

Re: IP weirdness

2005-08-08 Thread Lutz Hamann
Explanation accepted, Dave !

And I should know it - because I am one of those (admins) :-)

I always use the $TTL  86400  (default) in our z/OS BIND9-
implementations 


  ciao   Lutz

-
Lutz  Hamann
BETA Systems  Software AG
z/OS  System Engineering
-



 Dave Jones
 <[EMAIL PROTECTED]
 are.com>   To
 Sent by: Linux on LINUX-390@VM.MARIST.EDU
 390 Port   cc
 <[EMAIL PROTECTED]
 IST.EDU>  Subject
       Re: IP weirdness

 08.08.2005 14:32


 Please respond to
 Linux on 390 Port
 <[EMAIL PROTECTED]
 IST.EDU>






You're welcome, Lutz.

There was a discussion over the weekend on the VM-ESA list about why it
takes so long for DNS updates to propagate. It has to do with the TTL
(time to live) values set by various DNS administrators.

Have a good week.

DJ

Lutz Hamann wrote:
> Thank you, Dave ...
>
> I could never imagine that those DNS-updates take more than
> 2 days :-)  But let's wait  ...
>
> But at least I can acces the site via their IP-address.
>
>
>   ciao  Lutz
>
>
> -
> Lutz  Hamann
> BETA Systems  Software AG
> z/OS  System Engineering
> -
>
>
>
>  Dave Jones
>  <[EMAIL PROTECTED]
>  are.com>
To
>  Sent by: Linux on LINUX-390@VM.MARIST.EDU
>  390 Port
cc
>      <[EMAIL PROTECTED]
>  IST.EDU>
Subject
>Re: IP weirdness
>
>  08.08.2005 14:12
>
>
>  Please respond to
>  Linux on 390 Port
>  <[EMAIL PROTECTED]
>  IST.EDU>
>
>
>
>
>
>
> Hi, Lutz.
>
> www.vm.ibm.com has moved from 204.146.134.198 to 204.146.134.18.
>
> DNS updates are working their way through the Internet, so it's not just
> a German/European problem.
>
>
> DJ
>
> Lutz Hamann wrote:
>
>>Thank you for your explanation and the URL, Vic.
>>
>>I'd like to check it - if www.vm.ibm.com goes online again :-)
>>It seems to be off-line since last Friday or Saturday :-(
>>
>>Does anybody know the reason - or is it only specific German/European
>>problem ?
>>
>>
>>  ciao  Lutz
>>
>>-
>>Lutz  Hamann
>>BETA Systems  Software AG
>>z/OS  System Engineering
>>-
>>
>>
>>
>> Vic Cross
>> <[EMAIL PROTECTED]
>> au>
>
> To
>
>> Sent by: Linux on LINUX-390@VM.MARIST.EDU
>> 390 Port
>
> cc
>
>> <[EMAIL PROTECTED]
>> IST.EDU>
>
> Subject
>
>>   Re: IP weirdness
>>
>> 06.08.2005 16:24
>>
>>
>> Please respond to
>> Linux on 390 Port
>> <[EMAIL PROTECTED]
>> IST.EDU>
>>
>>
>>
>>
>>
>>
>>On Saturday 06 August 2005 04:38, Neale Ferguson wrote:
>>NF> I have a guest LAN that connects a number of guests.
>>
>>NF> All but one of the guests can talk to each other, except one
>>NF> (I'll call X) which can only talk to the default gateway. If I ping
>
> the
>
>>NF> others from X I get no response. The same goes when I go from the any
>>NF> other of the guests except R to X.
>>
>>NF> We are z/VM 4.4 0404. Guest X is SLES9 SP2, Guest R is SLES7, other
>>NF> guests are Debian.
>>
>>There are a few VMLAN fixes out since 0404RSU.  From recent experience
>
> I'd
>
>>suggest you get right up to date and try again (the qeth driver on the
>>guests
>>other than X might need an update as well, although it strikes me as odd
>>that
>>the SLES 7 system works talking to the SLES 9 SP2 given that its qeth is
>>probably older than the Debians'...).
>>
>>The z/VM team maintains an

Re: IP weirdness

2005-08-08 Thread Dave Jones

You're welcome, Lutz.

There was a discussion over the weekend on the VM-ESA list about why it
takes so long for DNS updates to propagate. It has to do with the TTL
(time to live) values set by various DNS administrators.

Have a good week.

DJ

Lutz Hamann wrote:

Thank you, Dave ...

I could never imagine that those DNS-updates take more than
2 days :-)  But let's wait  ...

But at least I can acces the site via their IP-address.


  ciao  Lutz


-
Lutz  Hamann
BETA Systems  Software AG
z/OS  System Engineering
-



 Dave Jones
 <[EMAIL PROTECTED]
 are.com>   To
 Sent by: Linux on LINUX-390@VM.MARIST.EDU
 390 Port   cc
 <[EMAIL PROTECTED]
 IST.EDU>  Subject
       Re: IP weirdness

 08.08.2005 14:12


 Please respond to
 Linux on 390 Port
 <[EMAIL PROTECTED]
 IST.EDU>






Hi, Lutz.

www.vm.ibm.com has moved from 204.146.134.198 to 204.146.134.18.

DNS updates are working their way through the Internet, so it's not just
a German/European problem.


DJ

Lutz Hamann wrote:


Thank you for your explanation and the URL, Vic.

I'd like to check it - if www.vm.ibm.com goes online again :-)
It seems to be off-line since last Friday or Saturday :-(

Does anybody know the reason - or is it only specific German/European
problem ?


 ciao  Lutz

-
Lutz  Hamann
BETA Systems  Software AG
z/OS  System Engineering
-



Vic Cross
<[EMAIL PROTECTED]
au>


To


Sent by: Linux on LINUX-390@VM.MARIST.EDU
390 Port


cc


<[EMAIL PROTECTED]
IST.EDU>


Subject


  Re: IP weirdness

06.08.2005 16:24


Please respond to
Linux on 390 Port
<[EMAIL PROTECTED]
IST.EDU>






On Saturday 06 August 2005 04:38, Neale Ferguson wrote:
NF> I have a guest LAN that connects a number of guests.

NF> All but one of the guests can talk to each other, except one
NF> (I'll call X) which can only talk to the default gateway. If I ping


the


NF> others from X I get no response. The same goes when I go from the any
NF> other of the guests except R to X.

NF> We are z/VM 4.4 0404. Guest X is SLES9 SP2, Guest R is SLES7, other
NF> guests are Debian.

There are a few VMLAN fixes out since 0404RSU.  From recent experience


I'd


suggest you get right up to date and try again (the qeth driver on the
guests
other than X might need an update as well, although it strikes me as odd
that
the SLES 7 system works talking to the SLES 9 SP2 given that its qeth is
probably older than the Debians'...).

The z/VM team maintains an excellent resource that talks about (among


other


things) z/VM maintenance levels in support of virtual networking:

http://www.vm.ibm.com/virtualnetwork

Look for the "Virtual Switch and Guest LAN CP Maintenance levels" link.

NF> The other weirdness I see is that all the guests have a subnet mask


of


NF> 255.255.255.192 but Q LAN DETAILS reports everyone as 255.255.255.0.

No need to be concerned about this.  At earlier levels the display shows
the
natural network mask (i.e. as if you weren't subnetting) instead of the
actual subnet mask in use.  On z/VM 5.1 the subnet mask display is


removed


(replaced by the MAC address, like the multicast display).

Cheers,
Vic Cross

--
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Re: IP weirdness

2005-08-08 Thread Lutz Hamann
Thank you, Dave ...

I could never imagine that those DNS-updates take more than
2 days :-)  But let's wait  ...

But at least I can acces the site via their IP-address.


  ciao  Lutz


-
Lutz  Hamann
BETA Systems  Software AG
z/OS  System Engineering
-



 Dave Jones
 <[EMAIL PROTECTED]
 are.com>   To
 Sent by: Linux on LINUX-390@VM.MARIST.EDU
 390 Port   cc
 <[EMAIL PROTECTED]
 IST.EDU>  Subject
       Re: IP weirdness

 08.08.2005 14:12


 Please respond to
 Linux on 390 Port
 <[EMAIL PROTECTED]
 IST.EDU>






Hi, Lutz.

www.vm.ibm.com has moved from 204.146.134.198 to 204.146.134.18.

DNS updates are working their way through the Internet, so it's not just
a German/European problem.


DJ

Lutz Hamann wrote:
> Thank you for your explanation and the URL, Vic.
>
> I'd like to check it - if www.vm.ibm.com goes online again :-)
> It seems to be off-line since last Friday or Saturday :-(
>
> Does anybody know the reason - or is it only specific German/European
> problem ?
>
>
>   ciao  Lutz
>
> -
> Lutz  Hamann
> BETA Systems  Software AG
> z/OS  System Engineering
> -
>
>
>
>  Vic Cross
>  <[EMAIL PROTECTED]
>  au>
To
>  Sent by: Linux on LINUX-390@VM.MARIST.EDU
>  390 Port
cc
>  <[EMAIL PROTECTED]
>  IST.EDU>
Subject
>Re: IP weirdness
>
>  06.08.2005 16:24
>
>
>  Please respond to
>  Linux on 390 Port
>  <[EMAIL PROTECTED]
>  IST.EDU>
>
>
>
>
>
>
> On Saturday 06 August 2005 04:38, Neale Ferguson wrote:
> NF> I have a guest LAN that connects a number of guests.
> 
> NF> All but one of the guests can talk to each other, except one
> NF> (I'll call X) which can only talk to the default gateway. If I ping
the
> NF> others from X I get no response. The same goes when I go from the any
> NF> other of the guests except R to X.
> 
> NF> We are z/VM 4.4 0404. Guest X is SLES9 SP2, Guest R is SLES7, other
> NF> guests are Debian.
>
> There are a few VMLAN fixes out since 0404RSU.  From recent experience
I'd
> suggest you get right up to date and try again (the qeth driver on the
> guests
> other than X might need an update as well, although it strikes me as odd
> that
> the SLES 7 system works talking to the SLES 9 SP2 given that its qeth is
> probably older than the Debians'...).
>
> The z/VM team maintains an excellent resource that talks about (among
other
> things) z/VM maintenance levels in support of virtual networking:
>
>  http://www.vm.ibm.com/virtualnetwork
>
> Look for the "Virtual Switch and Guest LAN CP Maintenance levels" link.
>
> NF> The other weirdness I see is that all the guests have a subnet mask
of
> NF> 255.255.255.192 but Q LAN DETAILS reports everyone as 255.255.255.0.
>
> No need to be concerned about this.  At earlier levels the display shows
> the
> natural network mask (i.e. as if you weren't subnetting) instead of the
> actual subnet mask in use.  On z/VM 5.1 the subnet mask display is
removed
> (replaced by the MAC address, like the multicast display).
>
> Cheers,
> Vic Cross
>
> --
> For LINUX-390 subscribe / signoff / archive access instructions,
> send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or
> visit
> http://www.marist.edu/htbin/wlvindex?LINUX-390
>
> --
> For LINUX-390 subscribe / signoff / archive access instructions,
> send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or
visit
> http://www.marist.edu/htbin/wlvindex?LINUX-390

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Re: IP weirdness

2005-08-08 Thread Dave Jones

Hi, Lutz.

www.vm.ibm.com has moved from 204.146.134.198 to 204.146.134.18.

DNS updates are working their way through the Internet, so it's not just
a German/European problem.


DJ

Lutz Hamann wrote:

Thank you for your explanation and the URL, Vic.

I'd like to check it - if www.vm.ibm.com goes online again :-)
It seems to be off-line since last Friday or Saturday :-(

Does anybody know the reason - or is it only specific German/European
problem ?


  ciao  Lutz

-
Lutz  Hamann
BETA Systems  Software AG
z/OS  System Engineering
-



 Vic Cross
 <[EMAIL PROTECTED]
 au>To
 Sent by: Linux on LINUX-390@VM.MARIST.EDU
 390 Port   cc
 <[EMAIL PROTECTED]
 IST.EDU>  Subject
       Re: IP weirdness

 06.08.2005 16:24


 Please respond to
 Linux on 390 Port
 <[EMAIL PROTECTED]
 IST.EDU>






On Saturday 06 August 2005 04:38, Neale Ferguson wrote:
NF> I have a guest LAN that connects a number of guests.

NF> All but one of the guests can talk to each other, except one
NF> (I'll call X) which can only talk to the default gateway. If I ping the
NF> others from X I get no response. The same goes when I go from the any
NF> other of the guests except R to X.

NF> We are z/VM 4.4 0404. Guest X is SLES9 SP2, Guest R is SLES7, other
NF> guests are Debian.

There are a few VMLAN fixes out since 0404RSU.  From recent experience I'd
suggest you get right up to date and try again (the qeth driver on the
guests
other than X might need an update as well, although it strikes me as odd
that
the SLES 7 system works talking to the SLES 9 SP2 given that its qeth is
probably older than the Debians'...).

The z/VM team maintains an excellent resource that talks about (among other
things) z/VM maintenance levels in support of virtual networking:

 http://www.vm.ibm.com/virtualnetwork

Look for the "Virtual Switch and Guest LAN CP Maintenance levels" link.

NF> The other weirdness I see is that all the guests have a subnet mask of
NF> 255.255.255.192 but Q LAN DETAILS reports everyone as 255.255.255.0.

No need to be concerned about this.  At earlier levels the display shows
the
natural network mask (i.e. as if you weren't subnetting) instead of the
actual subnet mask in use.  On z/VM 5.1 the subnet mask display is removed
(replaced by the MAC address, like the multicast display).

Cheers,
Vic Cross

--
For LINUX-390 subscribe / signoff / archive access instructions,
send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or
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Re: IP weirdness

2005-08-08 Thread Lutz Hamann
Thank you for your explanation and the URL, Vic.

I'd like to check it - if www.vm.ibm.com goes online again :-)
It seems to be off-line since last Friday or Saturday :-(

Does anybody know the reason - or is it only specific German/European
problem ?


  ciao  Lutz

-
Lutz  Hamann
BETA Systems  Software AG
z/OS  System Engineering
-



 Vic Cross
 <[EMAIL PROTECTED]
 au>To
 Sent by: Linux on LINUX-390@VM.MARIST.EDU
 390 Port   cc
 <[EMAIL PROTECTED]
 IST.EDU>  Subject
       Re: IP weirdness

 06.08.2005 16:24


 Please respond to
 Linux on 390 Port
 <[EMAIL PROTECTED]
 IST.EDU>






On Saturday 06 August 2005 04:38, Neale Ferguson wrote:
NF> I have a guest LAN that connects a number of guests.

NF> All but one of the guests can talk to each other, except one
NF> (I'll call X) which can only talk to the default gateway. If I ping the
NF> others from X I get no response. The same goes when I go from the any
NF> other of the guests except R to X.

NF> We are z/VM 4.4 0404. Guest X is SLES9 SP2, Guest R is SLES7, other
NF> guests are Debian.

There are a few VMLAN fixes out since 0404RSU.  From recent experience I'd
suggest you get right up to date and try again (the qeth driver on the
guests
other than X might need an update as well, although it strikes me as odd
that
the SLES 7 system works talking to the SLES 9 SP2 given that its qeth is
probably older than the Debians'...).

The z/VM team maintains an excellent resource that talks about (among other
things) z/VM maintenance levels in support of virtual networking:

 http://www.vm.ibm.com/virtualnetwork

Look for the "Virtual Switch and Guest LAN CP Maintenance levels" link.

NF> The other weirdness I see is that all the guests have a subnet mask of
NF> 255.255.255.192 but Q LAN DETAILS reports everyone as 255.255.255.0.

No need to be concerned about this.  At earlier levels the display shows
the
natural network mask (i.e. as if you weren't subnetting) instead of the
actual subnet mask in use.  On z/VM 5.1 the subnet mask display is removed
(replaced by the MAC address, like the multicast display).

Cheers,
Vic Cross

--
For LINUX-390 subscribe / signoff / archive access instructions,
send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or
visit
http://www.marist.edu/htbin/wlvindex?LINUX-390

--
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send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit
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Re: IP weirdness

2005-08-06 Thread Vic Cross
On Saturday 06 August 2005 04:38, Neale Ferguson wrote:
NF> I have a guest LAN that connects a number of guests.

NF> All but one of the guests can talk to each other, except one
NF> (I'll call X) which can only talk to the default gateway. If I ping the
NF> others from X I get no response. The same goes when I go from the any
NF> other of the guests except R to X.

NF> We are z/VM 4.4 0404. Guest X is SLES9 SP2, Guest R is SLES7, other
NF> guests are Debian.

There are a few VMLAN fixes out since 0404RSU.  From recent experience I'd
suggest you get right up to date and try again (the qeth driver on the guests
other than X might need an update as well, although it strikes me as odd that
the SLES 7 system works talking to the SLES 9 SP2 given that its qeth is
probably older than the Debians'...).

The z/VM team maintains an excellent resource that talks about (among other
things) z/VM maintenance levels in support of virtual networking:

http://www.vm.ibm.com/virtualnetwork

Look for the "Virtual Switch and Guest LAN CP Maintenance levels" link.

NF> The other weirdness I see is that all the guests have a subnet mask of
NF> 255.255.255.192 but Q LAN DETAILS reports everyone as 255.255.255.0.

No need to be concerned about this.  At earlier levels the display shows the
natural network mask (i.e. as if you weren't subnetting) instead of the
actual subnet mask in use.  On z/VM 5.1 the subnet mask display is removed
(replaced by the MAC address, like the multicast display).

Cheers,
Vic Cross

--
For LINUX-390 subscribe / signoff / archive access instructions,
send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit
http://www.marist.edu/htbin/wlvindex?LINUX-390


IP weirdness

2005-08-05 Thread Neale Ferguson
I have a guest LAN that connects a number of guests. One of the guests
is acting as a router (R) and is the default gateway for all the other
guests. All but one of the guests can talk to each other, except one
(I'll call X) which can only talk to the default gateway. If I ping the
others from X I get no response. The same goes when I go from the any
other of the guests except R to X. If I do a tcpdump 'host X' -vv on the
guest X is trying to ping I see nothing (call this guest Y). However, if
I do a tcpdump -i eth0 -vv I see stuff which looks like a ping but seems
to be missing the IP header information:

14:04:40.907445 00:00:40:01:89:1a > 45:00:00:54:6b:91, ethertype Unknown
(0xc0a8
), length 84:
0x:  8255 c0a8 8257  6692 054b 0017 42f3
.U...W..f..K..B.
0x0010:  a9ff 000a bc0b 0809 0a0b 0c0d 0e0f 1011

0x0020:  1213 1415 1617 1819 1a1b 1c1d 1e1f 2021
...!
0x0030:  2223 2425 2627 2829 2a2b 2c2d 2e2f 3031
"#$%&'()*+,-./01
0x0040:  3233 3435 3637   234567

So it appears the Guest LAN is able to deliver stuff but none of the
guests are recognizing that the payload is for them.

X's routing table:
192.168.130.64  0.0.0.0 255.255.255.192 U 0 0  0
eth0
169.254.0.0 0.0.0.0 255.255.0.0 U 0 0  0
eth0
127.0.0.0   0.0.0.0 255.0.0.0   U 0 0  0
lo
0.0.0.0 192.168.130.68  0.0.0.0 UG0 0  0
eth0

X's config:

eth0  Link encap:Ethernet  HWaddr 02:00:00:00:00:11
  inet addr:192.168.130.87  Bcast:192.168.130.127
Mask:255.255.255.192
  inet6 addr: fe80::200:0:100:11/64 Scope:Link
  UP BROADCAST RUNNING NOARP MULTICAST  MTU:8192  Metric:1
  RX packets:1333 errors:0 dropped:0 overruns:0 frame:0
  TX packets:1041 errors:0 dropped:0 overruns:0 carrier:0
  collisions:0 txqueuelen:1000
  RX bytes:96699 (94.4 Kb)  TX bytes:126565 (123.5 Kb)

Y's routing table:

192.168.130.64  0.0.0.0 255.255.255.192 U 0 0  0
eth0
0.0.0.0 192.168.130.68  0.0.0.0 UG0 0  0
eth0

Y's config:

eth0  Link encap:Ethernet  HWaddr 02:00:00:00:00:12
  inet addr:192.168.130.85  Bcast:192.168.130.127
Mask:255.255.255.192
  inet6 addr: fe80::ff:fe00:12/64 Scope:Link
  UP BROADCAST RUNNING NOARP MULTICAST  MTU:8192  Metric:1
  RX packets:5442 errors:0 dropped:0 overruns:0 frame:0
  TX packets:5311 errors:0 dropped:0 overruns:0 carrier:0
  collisions:0 txqueuelen:1000
  RX bytes:371571 (362.8 KiB)  TX bytes:995318 (971.9 KiB)

The other weirdness I see is that all the guests have a subnet mask of
255.255.255.192 but Q LAN DETAILS reports everyone as 255.255.255.0.

Y:
   Adapter Owner: YNIC: 0340  Name: UNASSIGNED
 Device: 0342  Unit: 002   Role: DATA
 VLAN: ANY  Assigned by user
   Unicast IP Addresses:
 192.168.130.85   Mask: 255.255.255.0
   Multicast IP Addresses:
 224.0.0.1MAC: 01-00-5E-00-00-01

Y's NIC:
Adapter 0340  Type: QDIO  Name: UNASSIGNED  Devices: 3
  Port 0 MAC: 02-00-00-00-00-12  LAN: SYSTEM LNXLAN3   MFS: 8192
  RX Packets: 11242  Discarded: 0  Errors: 0
  TX Packets: 10587  Discarded: 6  Errors: 0
  RX Bytes: 959602   TX Bytes: 2280553
  Connection Name: HALLOLE   State: Session Established
  Device: 0340  Unit: 000   Role: CTL-READ
  Device: 0341  Unit: 001   Role: CTL-WRITE
  Device: 0342  Unit: 002   Role: DATA
  VLAN: ANY  Assigned by user
Unicast IP Addresses:
  192.168.130.85   Mask: 255.255.255.0
Multicast IP Addresses:
  224.0.0.1MAC: 01-00-5E-00-00-01

X:
   Adapter Owner: XNIC: 0340  Name: UNASSIGNED
 Device: 0342  Unit: 002   Role: DATA
 VLAN: ANY  Assigned by user
   Unicast IP Addresses:
 192.168.130.87   Mask: 255.255.255.0
 FE80::200:0:100:11/64
   Multicast IP Addresses:
 224.0.0.1MAC: 01-00-5E-00-00-01
 224.0.0.251  MAC: 01-00-5E-00-00-FB
 224.0.1.22   MAC: 01-00-5E-00-01-16
 239.255.255.253  MAC: 01-00-5E-7F-FF-FD
 FF02::1  MAC: 33-33-00-00-00-01
 FF02::1:FF00:11  MAC: 33-33-FF-00-00-11

X's NIC:
Adapter 0340  Type: QDIO  Name: UNASSIGNED  Devices: 3
  Port 0 MAC: 02-00-00-00-00-11  LAN: SYSTEM LNXLAN3   MFS: 8192
  RX Packets: 1407   Discarded: 0  Errors: 0
  TX Packets: 1116   Discarded: 0  Errors: 0
  RX Bytes: 99629TX Bytes: 101257
  Connection Name: HALLOLE   State: Session Established
  Device: 0340  Unit: 000   Role: CTL-READ
  Device: 0341  Unit: 001   Role: CTL-WRITE
  Device: 0342  Unit: 002   Role: DATA
  VLAN: ANY  Assigned by user
Unicast IP Addresses:
  192.168.130.87   Mask: 255.255.255.0