r0 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(r0, &(0x7f0000000100)={0x0, 0x0, &(0x7f00000000c0)={&(0x7f0000003900)=@delpolicy={0x5c, 0x14, 0x1, 0x0, 0x0, {{@in6=@ipv4={'\x00', '\xff\xff', @loopback}, @in=@empty}}, [@mark={0xc}]}, 0x5c}}, 0x0)