Ignatios Souvatzis writes:
> Did the machine in question _ever_ (since reboot) have 127.0.0.1 assigned
> to the Ethernet interface?

No.  127.0.0.1 has never been assigned to any ethernet interface. 

$ uptime
9:00AM  up 5 days, 14:23, 8 users, load averages: 0.43, 0.49, 0.63

eg. no reboot since the "event".  The only ifconfig changes since the
event were an attempted addition of the NOARP flag to the de0 and lo0
interfaces.  The latter had no operational effect.

$ifconfig -a
de0: flags=8963<UP,BROADCAST,NOTRAILERS,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1500
	address: 00:00:c0:e2:7d:4e
	media: 10baseT/UTP status: active
	inet 24.1.65.208 netmask 0xfffff000 broadcast 24.1.79.255
de1: flags=8863<UP,BROADCAST,NOTRAILERS,RUNNING,SIMPLEX,MULTICAST> mtu 1500
	address: 00:00:c0:15:b1:e3
	media: 10baseT/UTP status: active
	inet 140.174.88.14 netmask 0xffffff80 broadcast 140.174.88.127
lo0: flags=8089<UP,LOOPBACK,NOARP,MULTICAST> mtu 32976
	inet 127.0.0.1 netmask 0xff000000 
ppp0: flags=8010<POINTOPOINT,MULTICAST> mtu 1500
ppp1: flags=8010<POINTOPOINT,MULTICAST> mtu 1500
sl0: flags=c010<POINTOPOINT,LINK2,MULTICAST> mtu 296
sl1: flags=c010<POINTOPOINT,LINK2,MULTICAST> mtu 296
tun0: flags=10<POINTOPOINT> mtu 1500
tun1: flags=10<POINTOPOINT> mtu 1500

$ arp -a
r1-fe0-0-100bt.frmt1.sfba.home.net (24.1.64.1) at 00:60:47:27:cd:00
proxy1.frmt1.sfba.home.com (24.1.64.33) at 08:00:69:05:51:9d
c742621-a.frmt1.sfba.home.com (24.1.65.137) at 00:40:05:5c:a4:90
c460058-a.frmt1.sfba.home.com (24.1.65.208) at 00:00:c0:e2:7d:4e permanent
wsrcc.com (140.174.88.1) at 08:00:20:77:55:16
gw-fremont.wsrcc.com (140.174.88.2) at 00:03:c6:00:01:c6
sarah.wsrcc.com (140.174.88.4) at (incomplete)
scoville.wsrcc.com (140.174.88.5) at 00:e0:29:00:e9:09
capsicum.wsrcc.com (140.174.88.14) at 00:00:c0:15:b1:3e permanent
habanero.wsrcc.com (140.174.88.15) at 00:a0:24:a9:8e:0a

The one thing I didn't think important to mention, but that could
possibly be interacting is that I have NAT active on the interface in
question.

map de0 140.174.88.1/24 -> 24.1.65.208/32 portmap tcp/udp 60000:65000
map de0 140.174.88.1/24 -> 24.1.65.208/32
map de0 140.174.88.1/24 -> 24.1.65.208/32 proxy port ftp ftp/tcp

-wolfgang
-- 
Wolfgang Rupprecht    <wolfgang@wsrcc.com>     http://www.wsrcc.com/wolfgang/
	  Never trust a program you don't have sources for.