/etc/path_to_inst existed all the time but there is not referece to net there
below contents of the file
sbus@1f,0/espdma@e,8400000/esp@e,8800000/sd@3,0" 3 "sd"
"/sbus@1f,0/espdma@e,8400000/esp@e,8800000/sd@4,0" 4 "sd"
"/sbus@1f,0/espdma@e,8400000/esp@e,8800000/sd@5,0" 5 "sd"
"/sbus@1f,0/espdma@e,8400000/esp@e,8800000/sd@6,0" 6 "sd"
"/sbus@1f,0/espdma@e,8400000/esp@e,8800000/st@0,0" 0 "st"
"/sbus@1f,0/espdma@e,8400000/esp@e,8800000/st@1,0" 1 "st"
"/sbus@1f,0/espdma@e,8400000/esp@e,8800000/st@2,0" 2 "st"
"/sbus@1f,0/espdma@e,8400000/esp@e,8800000/st@3,0" 3 "st"
"/sbus@1f,0/espdma@e,8400000/esp@e,8800000/st@4,0" 4 "st"
"/sbus@1f,0/espdma@e,8400000/esp@e,8800000/st@5,0" 5 "st"
"/sbus@1f,0/espdma@e,8400000/esp@e,8800000/st@6,0" 6 "st"
"/sbus@1f,0/espdma@e,8400000/esp@e,8800000/ses@0,0" 0 "ses"
"/sbus@1f,0/espdma@e,8400000/esp@e,8800000/ses@1,0" 1 "ses"
"/sbus@1f,0/espdma@e,8400000/esp@e,8800000/ses@2,0" 2 "ses"
"/sbus@1f,0/espdma@e,8400000/esp@e,8800000/ses@3,0" 3 "ses"
"/sbus@1f,0/espdma@e,8400000/esp@e,8800000/ses@4,0" 4 "ses"
"/sbus@1f,0/espdma@e,8400000/esp@e,8800000/ses@5,0" 5 "ses"
"/sbus@1f,0/espdma@e,8400000/esp@e,8800000/ses@6,0" 6 "ses"
"/sbus@1f,0/espdma@e,8400000/esp@e,8800000/ses@7,0" 7 "ses"
"/sbus@1f,0/QLGC,isp@2,10000" 0 "isp"
"/sbus@1f,0/QLGC,isp@2,10000/sd@0,0" 7 "sd"
"/sbus@1f,0/QLGC,isp@2,10000/sd@1,0" 8 "sd"
"/sbus@1f,0/QLGC,isp@2,10000/sd@2,0" 9 "sd"
/sbus@1f,0/QLGC,isp@2,10000/sd@d,0" 19 "sd"
"/sbus@1f,0/QLGC,isp@2,10000/sd@e,0" 20 "sd"
"/sbus@1f,0/QLGC,isp@2,10000/sd@f,0" 21 "sd"
"/sbus@1f,0/QLGC,isp@2,10000/st@0,0" 7 "st"
"/sbus@1f,0/QLGC,isp@2,10000/st@1,0" 8 "st"
"/sbus@1f,0/QLGC,isp@2,10000/st@2,0" 9 "st"
"/sbus@1f,0/QLGC,isp@2,10000/st@3,0" 10 "st"
"/sbus@1f,0/QLGC,isp@2,10000/st@4,0" 11 "st"
"/sbus@1f,0/QLGC,isp@2,10000/st@5,0" 12 "st"
"/sbus@1f,0/QLGC,isp@2,10000/st@6,0" 13 "st"
"/sbus@1f,0/QLGC,isp@2,10000/ses@0,0" 8 "ses"
"/sbus@1f,0/QLGC,isp@2,10000/ses@1,0" 9 "ses"
"/sbus@1f,0/QLGC,isp@2,10000/ses@2,0" 10 "ses"
"/sbus@1f,0/QLGC,isp@2,10000/ses@3,0" 11 "ses"
"/sbus@1f,0/QLGC,isp@2,10000/ses@4,0" 12 "ses"
"/sbus@1f,0/QLGC,isp@2,10000/ses@5,0" 13 "ses"
"/sbus@1f,0/QLGC,isp@2,10000/ses@6,0" 14 "ses"
"/sbus@1f,0/QLGC,isp@2,10000/ses@7,0" 15 "ses"
"/sbus@1f,0/QLGC,isp@2,10000/ses@8,0" 16 "ses"
"/sbus@1f,0/QLGC,isp@2,10000/ses@9,0" 17 "ses"
"/sbus@1f,0/QLGC,isp@2,10000/ses@a,0" 18 "ses"
"/sbus@1f,0/QLGC,isp@2,10000/ses@b,0" 19 "ses"
"/sbus@1f,0/QLGC,isp@2,10000/ses@c,0" 20 "ses"
sbus@1f,0/QLGC,isp@2,10000/ses@9,0" 17 "ses"
"/sbus@1f,0/QLGC,isp@2,10000/ses@a,0" 18 "ses"
"/sbus@1f,0/QLGC,isp@2,10000/ses@b,0" 19 "ses"
"/sbus@1f,0/QLGC,isp@2,10000/ses@c,0" 20 "ses"
"/sbus@1f,0/QLGC,isp@2,10000/ses@d,0" 21 "ses"
"/sbus@1f,0/QLGC,isp@2,10000/ses@e,0" 22 "ses"
"/sbus@1f,0/QLGC,isp@2,10000/ses@f,0" 23 "ses"
"/sbus@1f,0/zs@f,1100000" 0 "zs"
"/sbus@1f,0/zs@f,1000000" 1 "zs"
"/sbus@1f,0/SUNW,fdtwo@f,1400000" 0 "fd"
"/sbus@1f,0/ledma@e,8400010" 0 "ledma"
"/sbus@1f,0/ledma@e,8400010/le@e,8c00000" 0 "le"
"/sbus@1f,0/sbusmem@0,0" 0 "sbusmem"
"/sbus@1f,0/sbusmem@1,0" 1 "sbusmem"
"/sbus@1f,0/sbusmem@2,0" 2 "sbusmem"
"/sbus@1f,0/sbusmem@3,0" 3 "sbusmem"
"/sbus@1f,0/sbusmem@d,0" 4 "sbusmem"
"/sbus@1f,0/sbusmem@e,0" 5 "sbusmem"
"/sbus@1f,0/sbusmem@f,0" 6 "sbusmem"
"/sbus@1f,0/SUNW,bpp@e,c800000" 0 "bpp"
"/sbus@1f,0/SUNW,CS4231@d,c000000" 0 "audiocs"
"/pseudo" 0 "pseudo"
"/scsi_vhci" 0 "scsi_vhci"