r0 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(r0, &(0x7f0000000100)={0x0, 0x0, &(0x7f00000000c0)={&(0x7f00000002c0)=@allocspi={0x104, 0x16, 0x401, 0x0, 0x0, {{{@in=@loopback, @in6=@mcast2, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xee00}, {@in=@private, 0x0, 0x6c}, @in=@dev}, 0x0, 0x1000}, [@mark={0xc, 0x15, {0x0, 0x20}}]}, 0x104}}, 0x0)