On Tue, Sep 13, 2016 at 07:07:51AM -0400, rhkramer@gmail.com wrote:
On Tuesday, September 13, 2016 04:54:08 AM Darac Marjal wrote:On Tue, Sep 13, 2016 at 04:26:55PM +1000, Charlie wrote: >Kernel IP routing table >Destination Gateway Genmask Flags MSS Window irtt Iface >0.0.0.0 10.80.2.85 0.0.0.0 UG 0 0 0 eth0 >10.80.2.84 0.0.0.0 255.255.255.252 U 0 0 0 eth0 This translates as "For 10.80.2.84 to 10.80.2.87, talk directly to the host, otherwise gateway through 10.80.2.85".I'm not the OP, but maybe I can learn something. I can sort of see where you got the 10.80.2.84--oh, and I was going to say that I don't see where the 10.80.2.87 came from, but, without doing the math, maybe that comes from the 255.255.255.252 netmask?
Yes. I actually plugged the numbers into http://www.subnet-calculator.com/ as I'm lazy, but 255.255.255.252 is also written as /2 and it defines a subnet where everything but the last 2 bits of the address are the same. We're lucky that, in this instance 10.80.2.84 is on the lower boundary of this range (Actually, the routing table might enforce that), so the next 4 (inclusive) hosts make up the range .84 (which would usually be the 'network' address), .85 and .86 (which are both 'usable' hosts) and .87 (which would be the 'broadcast' address).
-- For more information, please reread.
Attachment:
signature.asc
Description: PGP signature