I have pretty simple IPv6 over PPPoE connection to ISP using SLAAC:
interface Dialer1
ipv6 address autoconfig default
Initially everything works fine, but after 30 minutes default route disappears from my routing table. Obviously, my ISP does not send periodic RAs and does not provide long enough lifetime in its first (solicited) RA.
How can I keep default route in my routing table while PPPoE is up? Is there any way to send RS periodically?
I do not want to add permanent static route, because PPPoE is not always active.