r0 = fork()
ptrace(0x10, r0)
ptrace$poke(0x5, r0, &(0x7f0000000040), 0xffffffffffff8001)
setsockopt$inet_mreq(0xffffffffffffffff, 0x0, 0x20, &(0x7f0000000000)={@empty, @multicast2}, 0x8)