Messages in this thread | | | From | (really ) | Date | 12 Apr 1996 17:07:49 +0400 | Subject | Re: ARP: arp called for own IP address |
| |
Linus Torvalds (torvalds@cs.Helsinki.FI) wrote:
: Note that the RFC1812 requirement by no means requires us to complicate : the routing code: we should instead add the routes to devices : automatically when creating the devices with ifconfig. That would : actually clean up the routing code somewhat: right now the IP routing : looks at the device address as a special case, even though it would be : cleaner to have a special _entry_ for that address.
Agree! Really, we should make it. I'm afraid it will confuse gated, I'll check it tonight.
But note, that RFC1812 requires more strong thing: it requires to check directly connected interfaces (not only host's own address) before checking routing table. It is the thing that I consider unacceptable.
: For example, the device 1.1.1.1 with netmask 255.255.255.0 should really : be thought of as two separate routes:
: 1.1.1.1 (255.255.255.255) - loopback : 1.1.0.0 (255.255.0.0) - device
: and if we did those as two separate entries it would clean some things : up. If we also sort the routing tables appropriately (ie force these : kinds of device routes first), we essentially get the rfc requirements, : with no ugly code.
No special efforts needed, these routes will be sorted automatically. The only change in the code: on UP event call rt_add, on down rt_del. That's all!
Alexey Kuznetsov.
| |