High CPU usage by bgpd when snmp is active

@fvbrasileiro, can you try some SMP config changes?
edit /etc/default/snmpd
and replace

SNMPDOPTS='-Lsd -Lf /dev/null -u snmp -g snmp -p /run/snmpd.pid'

to

SNMPDOPTS='-LSed -u snmp -g snmp -I -ipCidrRouteTable,inetCidrRouteTable -p /run/snmpd.pid'

Then restart snmp.