add dhcp snooping for trunked configs
do not fail with empty responses
use correct interface for ipsg when adding vlans
remove dhcp snooping entries first when clearing an interface
enter conf for the portchannel before removing dhcp snooping table entries
do not transmit LLDP for trunked networks
flake
Merge branch 'master' into portsec
do not fail when removing a ip binding that does not exist