Point-to-Point interfaces and routing

[Alexander Motin]

JINMEI Tatuya / 神明達哉 wrote:
>>Questions:
>>1. If I look for the routing tables I see:
>>fe80::211:2fff:fea9:7627%ng0  fe80::211:2fff:fea9:7627%ng0  UHL ng0
>>fe80::211:2fff:fea9:7627%tun0 link#3                        UHL lo0
> 
>>So now I can ping ip on tun0, but can't on ng0. Why did they different 
>>and what is right?
> 
> Which "version" of 6.1-STABLE are you using?  I guess this is due to a
> bug that was fixed recently.  A fix was already MFC'ed to RELENG_6 on
> September 29 (at rev. 1.51.2.10).

Thanks! After cvsup this problem gone. Now i have:
fe80::202:b3ff:feb2:534b%ng0      link#4     UHL      lo0

>>3. mpd ppp daemon on interface up event adds route for the local ip to 
>>the lo0. Is it right way? And how in theory it must work for IPv6?
> 
> At least we don't have to do that for IPv6.  The kernel (IPv6 stack)
> is designed to install the loopback route for any local address,
> whether it's on a p2p interface or not.

Is the anybody can explain source of this behaviour for IPv4?

-- 
Alexander Motin