[c-nsp] multipath doesn't work on received default routes?

[Dan Hollis]

I'm receiving default routes from 3 upstreams, but ios doesn't seem to 
want to multipath the default route. Only one default route is ever used, 
verified by looking at the outbound counters on the interfaces.

i do have 'maximum-paths 6' in the 'router bgp 13941' section of my config.
i also have cef enabled on all interfaces. i have confirmed it is enabled 
on the interfaces, and i have also manually cleared route caches (clear ip 
ro *) etc.

sh ip bgp 0.0.0.0 verifies that the routes are valid, but sh ip ro 0.0.0.0 
shows only one route ever being entered into the table.

#sh ip bgp
BGP table version is 1730946, local router ID is 2xx.xxx.xxx.xx6
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal
Origin codes: i - IGP, e - EGP, ? - incomplete

    Network          Next Hop            Metric LocPrf Weight Path
*  0.0.0.0          6x.xxx.xxx.xx7           0    200      0 xx9 i
*>                  1xx.xx.xxx.1                  200      0 xxxx1 i
*                   1xx.xxx.xxx.2                 200      0 xxxx2 i

#sh ip bgp 0.0.0.0 0.0.0.0
BGP routing table entry for 0.0.0.0/0, version 1212671
Paths: (7 available, best #3, table Default-IP-Routing-Table)
   Not advertised to any peer
   xx9
     6x.xxx.xxx.xx7 from 6x.xxx.xxx.xx7 (2xx.xxx.xxx.xx0)
       Origin IGP, metric 0, localpref 200, valid, external
   xx9, (received-only)
     6x.xxx.xxx.xx7 from 6x.xxx.xxx.xx7 (2xx.xxx.xxx.xx0)
       Origin IGP, metric 0, localpref 100, valid, external
   xxxx1
     1xx.xx.xxx.1 from 1xx.xx.xxx.1 (1xx.xx.xxx.1)
       Origin IGP, localpref 200, valid, external, best
   xxxx1, (received-only)
     1xx.xx.xxx.1 from 1xx.xx.xxx.1 (1xx.xx.xxx.1)
       Origin IGP, localpref 100, valid, external
   xxxx2
     1xx.xxx.xxx.2 from 1xx.xxx.xxx.2 (2xx.xxx.xx.x1)
       Origin IGP, localpref 200, valid, external
   xxxx2, (received-only)
     1xx.xxx.xxx.2 from 1xx.xxx.xxx.2 (2xx.xxx.xx.x1)
       Origin IGP, localpref 100, valid, external
   Local, (received-only)
     2xx.xxx.xxx.xx3 from 2xx.xxx.xxx.xx3 (2xx.x.xxx.x4)
       Origin IGP, metric 0, localpref 100, valid, internal

#sh ip ro 0.0.0.0
Routing entry for 0.0.0.0/0, supernet
   Known via "bgp 13941", distance 20, metric 0, candidate default path
   Tag xxxx1, type external
   Last update from 1xx.xx.xxx.1 00:22:31 ago
   Routing Descriptor Blocks:
   * 1xx.xx.xxx.1, from 1xx.xx.xxx.1, 00:22:31 ago
       Route metric is 0, traffic share count is 1
       AS Hops 1

I can manually add static default routes and it load balances then, but 
this is not what I want...

-Dan