WAX206 Newbie advice

Side question, my log gets spammed with: daemon.warn odhcpd[1860]: No default route present, overriding ra_lifetime!

I found a topic about disabling IPV6 because my ISP doesn't support it yet, does it have any negative impact if I keep it enabled? (Maybe this year the ISP will allow IPV6 and too lazy too revert back then haha)