Hi Selva, *,
On 04-Dec-15 06:55, Selva Nair wrote:
On Fri, Dec 4, 2015 at 12:01 AM, Leroy Tennison
<leroy.tenni...@verizon.net <mailto:leroy.tenni...@verizon.net>> wrote:
A couple of thoughts come to mind. First, if node 254 is always
active
then "well-behaved" DHCP clients should test for that and never accept
that address.
All this dhcp thing is just an exchange between the TAP interface and
the DHCP client on the same machine. Its not a "rogue dhcp server" on
the network.
I think I have added way too much to the confusion...
let's add some more confusion:
I've set up an openvpn server with a 10.200.0.0/24 subnet and two
clients. One windows client, the other linux (I don't have many windows
clients available). The windows client got a regular address from the
pool, the linux client received 10.200.0.254 using 'ifconfig-push'.
The "dhcp server address" listed on the windows client is 10.200.0.254
but when the linux client is not connect there are no responses to ping.
I do see the traffic entering the vpn server, however.
When the linux client is connect, I can ping the 10.200.0.254 address
from Windows and traffic does indeed appear on the linux client.
My conclusion would be : the 10.200.0.254 dhcp server address is truly a
bogus address and can be safely used.
What I do not know is what will happen if a second *windows* client gets
this address.
The suggestion to use .0 as the dhcp server address is meaningful, but
using the .0 address (i.e. the subnet network address) can break legacy
software under rare circumstances.
HTH,
JJK
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