VyOS command definitions, scripts, and utilities (mirror of https://github.com/vyos/vyos-1x.git) https://git.amelek.net/vyos/vyos-1x.git/atom?h=feature%2FT9082-codeql-cpp 2026-05-22T14:50:22+00:00 2026-05-22T14:50:22+00:00 Oleksandr Kuchmystyi o.kuchmystyi@vyos.io 2026-05-19T09:09:56+00:00 urn:sha1:81e8f14c5b9b322a998e6530184b07e9e9187ff5 Per RFC 3414 section 2.2 (Replay Protection), the `snmpEngineBoots` counter must be stored in non-volatile storage and incremented on every snmpd restart. VyOS was not persisting this value, causing it to reset to 1 after every reboot. SNMP managers cache the engineBoots value from previous sessions. When VyOS resets the counter to 1 after reboot, managers reject incoming SNMPv3 trap packets as "too old", producing errors such as: ``` usm: Message too old. reboot count invalid ``` This change introduces `/config/snmp/engineboots.count` as a disk-backed persist file and it uses to sync the counter into snmpd's conf before the daemon starts.