Packets from net 10 (no, not the lyrics)

Tue Sep 23 12:50:09 UTC 1997

> Date: Tue, 23 Sep 1997 20:46:15 +0900
> To: Cary Howell <chowell at comstar.net>
> From: Martyn Williams <martyn at twics.com>
> Subject: Re: Spammer at new home.
> Cc: nanog at merit.edu
> 
> Isn't spammer Quantum at quantcom.com ?

Actually, quantumcomm.com is a more interesting traceroute.
Especially hops 11 and 12, clearly being passed by Sprintlink.
Does anyone besides me see it as an issue that Sprintlink would
pass those packets? No, the network 10 isn't in my routing
tables.

Should I be filtering all reserved space at my border, or would
it be reasonable for me to expect the big guys not to take packets
with clearly inappropriate source addresses?

Or is my view on the situation incomplete?

traceroute www.quantumcomm.com
traceroute to www.quantumcomm.com (206.191.222.77), 30 hops max, 40 byte packets
 1  www-186 (205.210.186.2)  2 ms *  1 ms
 2  bcicor1-100bt-e1.barrie.connex.net (205.189.200.35)  1 ms  1 ms  1 ms
 3  207.107.244.217 (207.107.244.217)  6 ms 207.107.244.213 (207.107.244.213)  6 
ms spc-tor-7-Serial11-0-0-28.Sprint-Canada.Net (207.107.244.209)  6 ms
 4  204.50.251.33 (204.50.251.33)  112 ms  11 ms  220 ms
 5  144.228.165.25 (144.228.165.25)  20 ms  22 ms  19 ms
 6  144.228.60.21 (144.228.60.21)  20 ms  21 ms  20 ms
 7  144.232.0.78 (144.232.0.78)  21 ms  48 ms  20 ms
 8  144.232.8.86 (144.232.8.86)  71 ms  77 ms  31 ms
 9  144.228.50.18 (144.228.50.18)  43 ms  40 ms  37 ms
10  sl-sspace-1-S0-T1.sprintlink.net (144.228.18.78)  41 ms  39 ms  43 ms
11  10.1.0.5 (10.1.0.5)  41 ms  44 ms  41 ms
12  10.0.0.138 (10.0.0.138)  110 ms  71 ms  50 ms
13  206.191.222.77 (206.191.222.77)  76 ms  53 ms  51 ms

bcicor1.barrie>sh ip rout 10.0.0.0
% Network not in table
bcicor1.barrie>sh ip bgp sum
BGP table version is 3941193, main routing table version 3941193
48010 network entries (187332/187900 paths) using 11208976 bytes of memory
19645 BGP path attribute entries using 2615348 bytes of memory
0 BGP route-map cache entries using 0 bytes of memory
0 BGP filter-list cache entries using 0 bytes of memory
Dampening enabled. 243 history paths, 78 dampened paths
93539 received paths for inbound soft reconfiguration

Neighbor        V    AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down  State
206.186.255.219 4  3602 1397791  460484  3941185    0    0 1w1d     
206.221.252.1   4  6327 1107934  701905  3941185    0    0 1d07h    