[j-nsp] 6pe traceroute on qfx10k

[James Jun]

Hello,

So using QFX10K as P core, it seems 6PE traceroute handling is broken (15.1X63-D65).

QFX10K configured typically as a Juniper P box, and to get it to respond to 
traceroute in 6PE environment, I have the following config below (pasted below).

Basically, you configure family inet6 on core/PE facing interfaces so LSR can source
icmp using the core-facing interface's v6 address in a 6PE setup.  This works fine on MX.

It appears that on QFX10K, the box is attempting to pop labels and use inet6.0 unicast
routing table to send ttl-expired?   Seems like icmp-tunneling is broken for v6..?  o_O

Anyone else seeing similar issues?  Nothing surrounding icmp or 6pe issues when doing 
quick PR searches for 15.1X.


James

-------------------------------------------
protocols {
 mpls {
  ipv6-tunneling;
  icmp-tunneling;
 }
}
interfaces {
 et-0/0/1 {
  description "facing another P router";
  mtu 9216;
  unit 0 {
    family inet {
     address 192.168.1.1/31;
    }
    family inet6 {
     address 2001:db8::192.168.1.1/127;
    }
  }
 }
}
-------------------------------------------