My application enables DHCP and auto-IP in lwipopts.h. My test environment
consists of a standalone board connected via ethernet cable to a spare
ethernet port on a PC. There is no DHCP server involved, so I would expect
the IP address to always come up as 169.254.254.169. Most of the time it
does, but occasionally, it comes up as 169.254.254.170 or more rarely
169.254.254.171. Why does this happen? Is there a way to make the IP address
deterministic when DHCP is not available?

 

Alex Brophy

 

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