r0 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(r0, &(0x7f0000000340)={0x0, 0x0, &(0x7f0000000000)={&(0x7f0000000380)=@getsa={0x3c, 0x12, 0x1, 0x0, 0x0, {@in6=@dev}, [@srcaddr={0x14, 0xd, @in6=@mcast2}]}, 0x3c}}, 0x0)