PPPoE up time

I don't think FortiOS is counting timer for UP or DOWN on any interfaces. Only way to know interface's uptime, I think, is to look back the last UP event log and calculate the time from the event to now.

FGTxxxxxxx# diag netlink interface list ppp1 if=ppp1 family=00 type=512 index=28 mtu=1492 link=18 master=0 ref=160 state=off start fw_flags=0 flags=up p2p run noarp multicast Qdisc=pfifo_fast stat: rxp=3574745 txp=3089370 rxb=2782323847 txb=376832898 rxe=0 txe=0 rxd=0 txd=0 mc=0 collision=0 re: rxl=0 rxo=0 rxc=0 rxf=0 rxfi=0 rxm=0 te: txa=0 txc=0 txfi=0 txh=0 txw=0 misc rxc=0 txc=0 input_type=0 state=3 arp_entry=0 refcnt=160 FGTxxxxxxx # fnsysctl ifconfig ppp1 ppp1    Link encap:Point-Point Protocol         inet addr:xxx.xxx.xxx.xxx  Mask:255.255.255.255         UP POINTOPOINT RUNNING NOARP MULTICAST  MTU:1492  Metric:1         RX packets:3579552 errors:0 dropped:0 overruns:0 frame:0         TX packets:3094612 errors:0 dropped:0 overruns:0 carrier:0         collisions:0 txqueuelen:3         RX bytes:2784935464 (2.6 GB)  TX bytes:377314395 (359.8 MB)