why is it that

# ifconfig lo0
lo0: flags=8009<UP,LOOPBACK,MULTICAST> mtu 32972
        inet 127.0.0.1 netmask 0xff000000
        inet6 fe80::1%lo0 prefixlen 64 scopeid 0x2
        inet6 ::1 prefixlen 128

(noting the netmask) and then

# route -n get 127.0.0.2
   route to: 127.0.0.2
destination: default
       mask: default
    gateway: 206.22.3.4
 local addr: 206.22.3.12
  interface: ex0
      flags: <UP,GATEWAY,DONE,STATIC>
 recvpipe  sendpipe  ssthresh  rtt,msec    rttvar  hopcount      mtu     expire
       0         0         0         0         0         0      1500         0 

is it because lo0 is not marked with IFF_BROADCAST?

i know that IFF_LOOPBACK will cause tcpdump to skip over it if it has
not been told to use it specifically.  what other effects does that
flag have?  i've been trawling through the kernel, but can't quite
(yet) see the forest, just the trees...

tia.

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