[j-nsp] DHCP interface as next hop

[Aaron Dewell]

Hey all,

I haven't found an answer to this question (except for Cisco options which doesn't help me).  I want to configure a static route to a DHCP interface on an SRX240.  Here's the scenario:

ge-0/0/0 connected to CX111 (4G modem/DHCP)
t1-0/1/0 connected to an L3VPN (with BGP)
st0.0 should connect over ge-0/0/0

The t1 is considered trusted, so we do not want to form the IPSec tunnel over it.  There is a default route coming in via BGP on the T1.  The goal:

Statically route the IPSec tunnel endpoint over the 4G modem as a /32
Statically route 0/0 over st0.0 (and set precedence to >170, or set BGP down to 4)
Receive 0/0 from BGP over the T1 (or alternately not, with no need to alter precedence, and use two next-hops for one static 0/0)

The purpose is to have the tunnel up but not used until the T1 or BGP over it goes away.  

However, I cannot set ge-0/0/0.0 as the next-hop because it's not a point to point interface. I cannot set an IP address as the next-hop because I don't know when it will change.  

Any ideas on how to address that?

Thanks!

Aaron