ip: do not return uninitialized IPv6 ll attributes
ip: do not return uninitialized IPv6 ll attributes

Type: fix

Change-Id: If35cf7da0c3d1b92532cc2e45c164d6b5a08592c
Signed-off-by: Benoît Ganne <38aad8ffcfa407b890d258e568f161530f66882d@cisco.com>

FDio/vpp,chrisy/vpp,chrisy/vpp,FDio/vpp,chrisy/vpp,FDio/vpp,chrisy/vpp,FDio/vpp,FDio/vpp,FDio/vpp,chrisy/vpp,chrisy/vpp,FDio/vpp,chrisy/vpp,FDio/vpp,chrisy/vpp