rs2/ipv4: show route primary protocol pb_0003_as3280

show route primary protocol pb_0003_as3280

Table t_0003_as3280:
194.31.140.0/24      unicast [pb_0003_as3280 2021-01-16 18:56:26] * (100) [AS3280i]
	via 185.1.179.3 on ens19