[c-nsp] PW-Eth routing weirdness

[Bryan Holloway]

Hello all ...

I have a strange routing issue involving a PW-Ether interface on an 
ASR9001 which I cannot seem to get my head around.

Feel like I'm missing something really stupid, but, here goes:

Had an EoMPLS tunnel between a content-provider and some gear that they 
wished to manage on our network remotely. Used an l2vpn xconnect and 
worked fine for eons. Something like this:

l2vpn
    xconnect group THING
     p2p THING
      interface Bundle-Ether1.1234
      neighbor ipv4 A.B.C.D pw-id 1234

No issues, fine. Works great.

Then, CDN decided that the IP-space they were using to manage said 
devices was too small, so they requested that we route something bigger 
for them.

So I moved the L3 anchor-point upstream and added a routable interface 
for them.

l2vpn
    xconnect group THING
     p2p THING
      interface PW-Ether1234
      neighbor ipv4 A.B.C.D pw-id 1234

... plus ...

interface Bundle-Ether1.1000
  description The_slash_24_you_requested
  vrf MY_SUPER_FUN_VRF
  ipv4 address 10.0.0.1 255.255.255.0
  encapsulation dot1q 1000
!

interface PW-Ether1234
  description Your_original_slash_29_that_you_outgrew
  vrf MY_SUPER_FUN_VRF
  ipv4 address 10.10.10.1 255.255.255.248
  attach generic-interface-list GIL1
!

xconnect comes up; I can ping around locally.

So here's where things get weird.

 From this ASR, I can hit and ping all things in 10.10.10.0/29, and I 
can hit and ping all things in 10.10.10.0/29 when sourcing from 10.0.0.1.

But anything else in 10.0.0.0/24 can't hit anything in 10.10.10.0/29 
(except for .1)

I've tested this from both directions: setting up an SVI at the A-LOC in 
the 10.10.10.0/29 subnet and trying to hit anything in 10.0.0.0/24 
(other than .1) -- no go.

Setting up an SVI at the Z-LOC in 10.0.0.0/24 and trying to ping 
anything (other than .1) in 10.10.10.0/29 -- no joy.

I see ARP entries on both interfaces -- all looks fine. I just can't 
seem to route between them.

Is there something funky or special about PW-Ether interfaces that I'm 
missing? Sorry if this is a noob question, but I am perplexed. Turning 
the Google crank did not help.

ASR is running 5.3.4-sp8.

Thank you in advance!

			- bryan