I remember bringing this up before and being told that the sockets should not need to persist after a reboot, but I haven't confirmed this myself.

I think sockets can be recreated so it should be OK to silently delete them, but wanted to have discussion recorded somewhere.
My main concern is if /data/system/ndebugsocket is the only socket we may encounter or not.

So this is stale UNIX domain socket that is not backed by a running app anymore?
I suspect whatever will recreate the socket at boot.

Is this 
/data/system/ndebugsocket/sock 
on N?

kevin_cheets:/data/system # ls -l ndebugsocket/sock                                                                                    
srwx------ 1 system system 0 2017-04-27 14:00 ndebugsocket/sock

I wanted to check my hypothesis, but I thought fuser would show me who's using it but nothing is shown.
hmm


localhost ~ # fuser -v -a /home/root/s_h_o_u/android-data/data/system/ndebugsocket/sock 

netstat -l -p
inside container tells me (hmm why does android-sh not have the permission to see the process that's listening ?):

unix  2      [ ACC ]     STREAM     LISTENING        21998 -                   /data/system/ndebugsocket/sock



deleting the file and logging in again ends up recreating the file as expected.

close as working as intended?