[libvirt] netlink message help

I'm try to implement adding addresses to ehternet devices via libvirt and i need to add address with peer (like point to point) in iproute : ip a add xx.xx.xx.xx peer yy.yy.yy.yy dev tapNNN In netlink as i see i need to add in payload IFA_LOCAL address , after that IFA_ADDRESS, but this is not works =(. Can somebody helps me? -- Vasiliy Tolstov, e-mail: v.tolstov(a)selfip.ru