What does "No route to host" mean

Frequently Asked Questions for FreeBSD 2.X : Networking : I can't make ppp work. What am I doing wrong ? : What does "No route to host" mean
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10.7.3. What does "No route to host" mean

This error is usually due to a missing

          MYADDR:
            delete ALL
            add 0 0 HISADDR

section in your /etc/ppp/ppp.linkup file. This is only necessary if you have a dynamic IP address or don't know the address of your gateway. If you're using interactive mode, you can type the following after entering packet mode (packet mode is indicated by the capitalized PPP in the prompt):

          delete ALL
          add 0 0 HISADDR

Refer to the PPP and Dynamic IP addresses section of the handbook for further details.