I don't know if this applies to 2.2.x, and don't have a setup to test
it with 2.2.x but...
I have a 2.0.36 router doing evil things to .0 and .255
addresses *not* directly to the machine.
A router *should* respond/block traffic to network and
broadcast addresses on *local* networks, and it does this.
A router *should* pass through traffic to network and
broadcast addresses that are *not* local, leaving the last hop router
to respond/block traffic to a network address or broadcast address.
It only does this correctly for *non* .0 and .255 addresses.
The box is always blocking the first and last address of old
classful networks, even if it is not the last hop router. Unless I am
missing somthing here this is not correct.
The fun thing is, I have a /24 for dialin use, with a /27 and
/28 delivered to each 48 port dialin unit. The portmasters have
addresses in a /28 withing a different /24.
The routes for the first unit look like
x.x.171.0 x.x.170.98 255.255.255.224 UG 0 0 55 eth2
x.x.171.32 x.x.170.98 255.255.255.240 UG 0 0 39 eth2
The router is bouncing traffic for x.x.171.0, *as if* it were
a local network. Traffic to x.x.171.32 passes fine.
If traffic to x.x.171.0 it should be done by the last hop
router (in this case a portmaster) *not* anoth box in the chain.
Questions? Comments? Help?
---
As folks might have suspected, not much survives except roaches,
and they don't carry large enough packets fast enough...
--About the Internet and nuclear war.
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This archive was generated by hypermail 2b29 : Mon May 15 2000 - 19:06:29 EDT