r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
r1 = socket$packet(0x11, 0x2, 0x300)
ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000140)={'sit0\x00', <r2=>0x0})
ioctl$sock_inet6_SIOCSIFDSTADDR(r0, 0x8918, &(0x7f0000000040)={@local, 0x0, r2})