26 Aug
2013
26 Aug
'13
5:44 a.m.
Netmask surely
has a relation to broadcast packets, but not multicast.
Several user on this list use /32 (255.255.255.255) netmask on their
tunl0 interface.
It is not completely clear to me what the netmask on tunl0 really does.
I understand what it does on a local network, but not for tunl0.
For the routing, it does not appear to influence anything. And at least by
setting it this way, I avoid having that unclear route for 44.0.0.0/8 that is added
when tunl0 is created. Maybe it breaks multicast, but I don't know how.