MESSAGE
| DATE | 2016-04-13 |
| FROM | Ruben Safir
|
| SUBJECT | Re: [Hangout-NYLXS] confused as to arp tables
|
On 04/13/2016 12:02 PM, Ruben Safir wrote:
> I have this arp table on my server
>
> www:~ # arp
> Address HWtype HWaddress Flags Mask Iface
> 208.115.113.85 (incomplete) eth1
> ...
> i.root-servers.net (incomplete) eth1
> stat20.mrbrklyn.com ether ac:b5:7d:76:59:8d C eth0
> ool-60391751.static.opt ether 10:5f:49:e3:16:c3 C eth1
> 72.159.134.132 (incomplete) eth1
>
>
> I pimg the root dns
> www:~ # ping i.root-servers.net
> PING i.root-servers.net (192.36.148.17) 56(84) bytes of data.
> 64 bytes from i.root-servers.net (192.36.148.17): icmp_seq=1 ttl=53 time=15.7 ms
> 64 bytes from i.root-servers.net (192.36.148.17): icmp_seq=2 ttl=53 time=17.4 ms
> 64 bytes from i.root-servers.net (192.36.148.17): icmp_seq=3 ttl=53 time=15.9 ms
> 64 bytes from i.root-servers.net (192.36.148.17): icmp_seq=4 ttl=53 time=15.4 ms
> 64 bytes from i.root-servers.net (192.36.148.17): icmp_seq=5 ttl=53 time=16.0 ms
> 64 bytes from i.root-servers.net (192.36.148.17): icmp_seq=6 ttl=53 time=15.0 ms
>
> then arp again
> www:~ # arp i.root-servers.net
> Address HWtype HWaddress Flags Mask Iface
> i.root-servers.net (incomplete) eth1
>
>
> How can I ping and not have the mac address? The linked layer frame uses the destination
> mac of the Masquaraded router? I thought the arps would go upstream all the hops
> and deliver the mac?
>
>
But the sending host must also indicate to its adapter an appro-
priate destination MAC address. What MAC address should the adapter use? One
might be tempted to guess that the appropriate MAC address is that of
the adapter
for host 222.222.222.222, namely, 49-BD-D2-C7-56-2A
text pg 469
--
So many immigrant groups have swept through our town
that Brooklyn, like Atlantis, reaches mythological
proportions in the mind of the world - RI Safir 1998
http://www.mrbrklyn.com
DRM is THEFT - We are the STAKEHOLDERS - RI Safir 2002
http://www.nylxs.com - Leadership Development in Free Software
http://www2.mrbrklyn.com/resources - Unpublished Archive
http://www.coinhangout.com - coins!
http://www.brooklyn-living.com
Being so tracked is for FARM ANIMALS and and extermination camps,
but incompatible with living as a free human being. -RI Safir 2013
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