router – Are these network routes normal?

When I check the route of my network, I sometimes see my real IP address at the top, and sometimes my IP address is lower than that of my modem. I think it can be an interception, a bug or just normal (the first image is more common). Ideas?

Obs: The print is in Portuguese. Translation:

Destino = "destination"

Máscara de Sub-rede = "subnet mask"

Próximo salto = I do not know how to translate because I do not know what it is

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