At 10:33 PM 2/26/2005 -0500, Tibbs, Richard wrote:

Dear list,
I have a Bering 1.2 firewall.
I have read several man pages for ip route, and they all say ~
"
local - the destinations are assigned to this host. The packets are
looped back and delivered locally.

broadcast - the destinations are broadcast addresses. The packets are
sent as link broadcasts.
"
However, several lines in the output below don't make sense,
specifically:
broadcast 192.168.1.0 dev eth1  table local  proto kernel  scope link
src 192.168.1.254
broadcast 216.x.y.64 dev eth0  table local  proto kernel  scope link
src 216.x.y.89
broadcast 127.0.0.0 dev lo  table local  proto kernel  scope link  src
127.0.0.1
How are 192.168.1.0, 216.x.y.64 or 127.0.0.0  broadcast addresses?
I can ping 216.x.y.64, and I do not get bazillions of replies (a la
solaris), so it I don't think it can be a broadcast address, IMHO.

Can anybody explain this to me?
[background info deleted]

From looking at my own setup here, it appears that "ip route list table all" reports network (base) addresses as broadcast addresses, and (to my surprise) the kernel actually treats these base addresses as broadcast addresses in, for example, ping requests. So ...

        192.168.1.0 is the network address of your LAN.

216.x.y.64 should be the network address of your /26 external network (inferred from your statement, deleted here, that its broadcast address is 216.x.y.127). Without knowing a lot more about your LAN, I cannot guess why you do not get "bazillions" of replies ... though you really should not expect more than 62, well short of "bazillions" ... more interesting is whether you get 1 or more than 1, and how may hosts are present on this /26 network that will respond to pings. (For one quick check, does ping'ing 216.x.y.64 give different results from ping'ing 216.x.y.127? As a reference point here for you, I get 5 hosts responding to both broadcast pings in a comparable situation, out of the 7 present on the LAN ... basically, my Linux hosts respond but my Windows hosts do not.)

127.0.0.0 is the network address of the standard loopback network (127.0.0.0/8) on the "lo" pseudo-device.




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