[igraph] Generating a network with a given degree list

[Lorenzo Isella]

Dear All,
Perhaps this has already been asked, but I have not been able to find 
the solution online onr on the archives.
Let us say you are a given list of the degrees for every node in a network

deg_list<-c(4,1,2,3,3,1,1,1,1)

how can you ask igraph to generate a network with that given degree list 
(also specifying that you want it to be undirected and simple)?
Many thanks

Lorenzo