Hi guys, I also have this issue - but not on all of my Routerboards. All RB's are running 6.17 and were working fine up to release 6.15. I'm running SNMPv2. RB2011UAS: Started working after two reboots. 751U-2HnD: Several reboots, only gives me 112 lines when doing a snmpwalk. 750: Several reboots, ...