I read the man page of
ip and still do not understand what
src is and I could not find much documentation.
Please, if you can explain it thoroughly or point to some link it a good answer.
Nowadays, especially with IPv6, it is often possible to have multiple IP addresses on a single interface. That means that a route such as
does not uniquely determine the source IP of the packages anymore (as it had been the case if
This is especially useful if you want to use IPv6 with privacy extensions. The kernel would then normally use the latest temporary address. However, you can make it use a specific permanent address when accessing a particular (for example, local) network using the