We have just setup 2 site-to-site vpn's going to our head office. Anywhere between 3 hours and 24 hours the tunnel is alive, but packet loss goes from 0% to upper 80's and 90's making the tunnel useless. Reloading the head office router fixes the issue.
I have tried clearing the arp cache when this is an issue but it has not resolved the issue.
Can someone help me debug what is going on?