Re: netdde builds

[Jason Montleon]

I installed netdde 0.0.20200330-13 today via apt and it causes boot to fail 
with a message:
```
Final irq 10
irq handler [10]: new delivery port f51a4f60 ehtry f440a520 for 
/hurd/netdde(582)
intnull(11)
```