r0 = socket$nl_xfrm(0x10, 0x3, 0x6)
r1 = dup(r0)
sendmsg$nl_xfrm(r1, &(0x7f00000004c0)={0x0, 0x0, &(0x7f0000000480)={&(0x7f0000000200)=@polexpire={0xc8, 0x1b, 0x1, 0x0, 0x0, {{{@in=@loopback}}}, [@XFRMA_IF_ID={0x8}]}, 0xc8}}, 0x0)