r0 = socket$netlink(0x10, 0x3, 0x0)
r1 = fcntl$dupfd(r0, 0x0, r0)
sendmsg$nl_generic(r1, &(0x7f0000000280)={0x0, 0x0, &(0x7f00000001c0)={&(0x7f0000000140)={0x2c, 0x15, 0xc21, 0x0, 0x0, {0xa, 0xf0}, [@typed={0x4, 0x0, 0x0, 0x0, @str}, @typed={0x14, 0x1, 0x0, 0x0, @ipv6=@mcast1}]}, 0x2c}}, 0x0)