After doing some poking around I found that the command ipconfig /renew can be used to reset the default ip address (I think that's what its doing anyway) and that this fixes my problem.
Você está usando o Windows 10 build 14393.479 depois da KB3201845 da semana passada.
Does anybody know why and more importantly how to fix my this permanently?
Você precisa atualizar para o Windows 10 build 14393.576 instalando KB3206632 .
Foi confirmado pela Microsoft que o KB3201845 causou o problema que você descreveu.
If the service is broken or behaving unexpectedly, customers are unable to access the internet or local network resources, which appears to be the behavior that some Windows 10 customers are experiencing after the update.
A spokesperson for Microsoft said they are aware of the issue and gave the following advice;
"Some customers using Windows 10 have reported difficulties connecting to the internet, as a first step, we recommend customers restart their PCs." "If this does not resolve the problem, visit our website for further support."
As notas de lançamento do KB3206632 indicam o seguinte; "Solucionou uma falha de serviço no CDPSVC que, em algumas situações, poderia levar a máquina a não conseguir adquirir um endereço IP."
Você pode confirmar que é afetado por esse bug, verificando se recebeu um endereço IP 169.254.0.0/16.
Have a look at reserved IP address RFC 5735 under special use IPv4:
169.254.0.0/16 - This is the "link local" block. As described in RFC3927, it is allocated for communication between hosts on a single link. Hosts obtain these addresses by auto-configuration, such as when a DHCP server cannot be found.