1. No there is no IP's on st0 interfaces
2. Yes, they are in trust zone.
device with routing instance: http://pastebin.com/VQZLshnd
device without routing instance: http://pastebin.com/eMdJ1KBQ
> Can you share the "show route" for the OSPF neighbors?
ofc: here it is:
device with routing instance: http://pastebin.com/XCX1RKYi
device without:
inet.0: 9 destinations, 9 routes (9 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both
0.0.0.0/0 *[Static/5] 1w0d 22:14:12
> to 84.204.167.41 via fe-0/0/0.0
84.204.167.40/29 *[Direct/0] 1w0d 22:14:12> via fe-0/0/0.0
84.204.167.45/32 *[Local/0] 1w6d 14:34:50
Local via fe-0/0/0.0
172.17.20.0/24 *[Static/5] 1w0d 22:22:06> via st0.2
192.168.10.0/24 *[Direct/0] 1w4d 12:50:58> via vlan.0
192.168.10.1/32 *[Local/0] 1w6d 14:34:59
Local via vlan.0
192.168.11.0/24 *[Static/5] 1d 20:26:01> via st0.1
192.168.70.0/24 *[Static/5] 1w0d 22:22:06> via st0.2
224.0.0.5/32 *[OSPF/10] 01:49:41, metric 1
MultiRecv
inet6.0: 2 destinations, 2 routes (2 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both
fe80::/64 *[Direct/0] 1d 16:53:33> via st0.0
fe80::3e61:40f:fce2:540/128
*[Local/0] 1w6d 14:34:59
Local via st0.0