r0 = socket$nl_route(0x10, 0x3, 0x0)
sendmsg$netlink(r0, &(0x7f0000000080)={0x0, 0x0, &(0x7f0000000340)=[{&(0x7f0000000040)={0x28, 0x2a, 0xd01, 0x0, 0x0, "", [@nested={0x18, 0x0, 0x0, 0x1, [@typed={0x14, 0x0, 0x0, 0x0, @ipv6=@loopback}]}]}, 0x28}], 0x1}, 0x0)