Dear all, I noticed, that the linear_solver value can be set to ma86, but I couldn't find any documentation on how to use hsl_ma86 with Ipopt. It seems like ma86 can not be build together with Ipopt like ma57 and I also do not know if it's possilbe to use the linear solver loader. So my question is: How do I use ma86 with Ipopt? Regards Sascha