def save(self, **kwargs):
"""
Override default save() method to set AFI,
parent prefix, and check VRF group restrictions
:param kwargs:
:return:
"""
# Check VRF group restrictions
cv = self.get_collision(self.vrf, self.address)
if cv:
# Collision detected
raise ValidationError("Address already exists in VRF %s" % cv)
# Detect AFI
self.afi = self.get_afi(self.address)
# Set proper prefix
self.prefix = Prefix.get_parent(self.vrf, self.afi, self.address)
super(Address, self).save(**kwargs)
