Why is /etc/resolv.conf on tmpfs?

[arne anka]

> Is there some really good reason for this, or can I just wipe out the
> symlink and make it a file in /etc?  I'm tired of having to put my
> nameserver in there every time I fire up the phone.

you might do the same as 2007.2 does: add to /etc/network/interfaces in  
the usb0 stanza

echo "nameserver yournameserverip" > /etc/resolv.conf

if usb is up'd the resolve.conf will be populated with that ip.
any other kind of networking (wlan, gprs, not sure about bt) will get it's  
resolv.conf populated by dhcp, i think.