Hi,
It seems there is a regression with ds_is_from_list(). When used without arguments it works on kamailio 4.4, but it doesn't work on kamailio 5.0. I used the same dispatcher set and configuration for both versions. On kamailio 4.4 ds_is_from_list() returned true and on kamailio 5.0 it returned false. I used the build from last night by sipwise.
I haven't had time yet to figure out what changed. I'm reporting it here to see if it is known already.
Can you try with latest master? I just pushed a patch that hopefully fixes it. There was a regression introduced by the new avl indexing of the dispatcher groups.
I finally found some time to test this and it seems to be solved. Thanks for the quick fix!
Closed #848.