Adds socket.gethostbyname() to resolve DNS or validate IP before
using it in sendto(). Also strips whitespace and quotes from host
value to prevent hidden characters from config parsing.
The DV3000 was being configured with RATEP parameters that correspond
to D-Star AMBE codec, not DMR AMBE+2. G4KLX AMBETools uses RATET 33
(rate table entry 33) for DMR which selects the correct codec.
Also removed incorrect interleaving - DMR voice bursts use raw AMBE
frames without additional interleaving (confirmed by G4KLX wav2ambe).
Joaquin Madrid Belando