On 23 Feb 2012, at 03:54, Brian Kantor wrote:
On Wed, 22 Feb 2012 15:19:31 -0800, David Josephson WA6NMF wa6nmf@josephson.com wrote:
I am puzzled that we want to assign 44-net addresses one by one as shown in amprhosts rather than as subnets. Perhaps there is a historical reason for that. The routing table could get to be very large (we can hope!)
Subnetting is reasonable to do but we still have to assign addresses in those subnets one at a time in order to get DNS entries for them and to enable them in the Internet ingress filter.
The division of the AMPRNet space into the existing blocks of addresses was primarily for administrative convenience, not as a mandated subnetting scheme.
The hard question is what size region and what size subnet?
1. That is indeed a hard question. And I don't think one size will fit all no matter how much effort goes into it. My own preference is logical areas with 'room to grow'. However as usage of IP has died a death here.
2. I'd be interested in seeing the paper as well
and 3. Going back to startup scripts.
With a lot of reading old posts and figuring things out. I ended up with the following (Ubuntu 10.04 LTS)
root@mini-itx:~# cat /etc/iproute2/rt_tables # # reserved values # 255 local 254 main 253 default 0 unspec # # local # #1 inr.ruhep 200 44
/etc/network/interfaces .. auto iface tunl1 inet static address 44.155.6.12 netmask 255.255.255.0 network 44.155.6.0 broadcast 44.155.6.255 pre-up /sbin/ip tunnel add tunl1 mode ipip remote 169.228.66.251 local 10.100.12.254 post-down /sbin/ip tunnel del tunl1 pre-down /sbin/ip route del default via 169.228.66.251 onlink table 44 pre-down /sbin/ip route del 169.228.66.251 dev eth0 table 44 pre-down /sbin/ip rule del to 44.0.0.0/8 table 44 pre-down /sbin/ip rule del from 44.0.0.0/8 table 44 pre-down /sbin/ip rule del to 44.155.6.12/24 table main up /sbin/ip rule add to 44.155.6.12/24 table main priority 1 up /sbin/ip rule add from 44.0.0.0/8 table 44 priority 44 up /sbin/ip rule add to 44.0.0.0/8 table 44 priority 45 up /sbin/ip route add 169.228.66.251 dev eth0 table 44 up /sbin/ip route add default dev tunl1 via 169.228.66.251 onlink table 44
I'm using the most excellent rip44d
I found (by trial, error, and confusion) that if I had another interface with the 44.155.6.12 IP. rip44d wouldn't work. I'm using 44.155.6.12 as its one of the only 2 IPs that I have that is already in the DNS.
Cheers John EI7IG