r0 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(r0, &(0x7f0000000840)={0x0, 0x0, &(0x7f0000000800)={&(0x7f0000000880)=@updsa={0x138, 0x1a, 0x1, 0x70bd27, 0x25dfdbfd, {{@in=@loopback, @in6=@loopback, 0x4e21, 0xffef, 0x4e20, 0x2, 0xa, 0x20, 0x80}, {@in=@multicast1, 0x4d2, 0x2b}, @in=@initdev={0xac, 0x1e, 0x0, 0x0}, {0x8000, 0x6, 0x9, 0x2, 0x5, 0xa3a7, 0x3f, 0x2}, {0x5, 0x0, 0x2, 0x7}, {0x1000, 0xb3e1, 0x6}, 0x270bd2a, 0x0, 0xa, 0x0, 0x1, 0x21}, [@algo_auth={0x48, 0x1, {{'blake2b-256-generic\x00'}}}]}, 0x138}, 0x1, 0x0, 0x0, 0x40040}, 0x40000)