Im running MPLS L3VPN. PE1 and PE2 have iBGP peering to exchange VPNV4 routes. I have enabled the neighbour in address-family vpnv4. But I don't what PE1 and PE2 exchange global ipv4 routing which were originated from network command. If i disabled the neighbour in address-family ipv4, the neighbour relationship goes down. How to make both PE only exchange VPNV4 routes ?