Hi, > I have liblwip0 package installed, but when running /hurd/lwip, I am > getting: > > /hurd/lwip: symbol lookup error: /hurd/lwip: undefined symbol: > tcpip_callback_with_block I don't know what's the problem, TBH. Are you using both translator and liblwip from upstream?, I don't see that function declared or called in the translator nor liblwip.