Symptom
N7K experiences a service crash on "Netstack"
ARP-3-PKT_OUT: arp [4231] Failed to send packet to PM
%SYSMGR-2-SERVICE_CRASHED: Service "netstack" (PID 4234) hasn't caught signal 11 (core will be saved).
%ARP-3-IP_INTERNAL_ERROR: arp [4231] context name not specified 2012
%ARP-3-IP_INTERNAL_ERROR: arp [4231] -Traceback: libip.so+0x12a09 0x8085985 0x8086e35 librsw.so+0xd59e8 librsw.so+0xd5e26 librsw.so+0xd428a librsw.so+0xd5676 librsw.so+0xa6aff libpthread.so.0+0x6140 libc.so.6+0xca8ce
Conditions
A VLAN was previously deleted, causing a potential null pointer dereference when Netstack was trying to look up its virtual IP.
