Jie Gao wrote: [...]
We need to write a generic function to resolve localhost and make sure that we get an ip and not ::1 on the ipv4 systems. If we get ::1 Apache won't start. Help to accomplish that is very appreciated.
I have spent some time into this and found some interesting things.
On a Solaris 9 host with both IPv4 and IPv6 configured, and with the following in /etc/nsswitch.conf:
hosts: files dns ipnodes: files
and with the following in /etc/inet/ipnodes (defaults):
# # Internet host table # ::1 localhost 127.0.0.1 localhost
and with the following in /etc/hosts:
127.0.0.1 localhost
, I did a "ifconfig lo0 inet6 down".
Now, nslookup localhost resolves to 127.0.0.1 and vice versa. (Using /etc/hosts file?)
"dig" will not resolve it. (Not using /etc/hosts?)
The following piece of perl code succeeds in connecting to the daytime port:
my $proto = getprotobyname('udp'); socket(SOCKET, PF_INET, SOCK_DGRAM, $proto); my $sin = sockaddr_in(13,inet_aton('localhost')); connect(SOCKET,$sin) || print "not connected:$!\n";
(Why and how does perl find the IPv4 interface?)
strace it to see why. e.g. on my machine:
strace perl -le 'use Socket; sockaddr_in(13, inet_aton("localhost"))' ;
open("/etc/host.conf", O_RDONLY) = 3
[...]
open("/etc/hosts", O_RDONLY) = 3
read(3, "127.0.0.1\t\tlocalhost.localdomain"..., 4096) = 80But ping fails. (Only looks into /etc/inet/ipnodes?)
again, strace it - on my machine (linux/ipv4) it also reads from /etc/hosts.
A piece of puzzle that needs more time to solve it.
__________________________________________________________________ Stas Bekman JAm_pH ------> Just Another mod_perl Hacker http://stason.org/ mod_perl Guide ---> http://perl.apache.org mailto:[EMAIL PROTECTED] http://use.perl.org http://apacheweek.com http://modperlbook.org http://apache.org http://ticketmaster.com
-- Report problems: http://perl.apache.org/bugs/ Mail list info: http://perl.apache.org/maillist/modperl.html List etiquette: http://perl.apache.org/maillist/email-etiquette.html
