Am Samstag, 13. Februar 2010 11:55:42 schrieben Sie:
> On Sat, Feb 13, 2010 at 12:11:58AM +0100, Michael Schwartzkopff wrote:
> > Am Freitag, 12. Februar 2010 23:57:05 schrieben Sie:
> > > On Fri, Feb 12, 2010 at 10:02:55PM +0100, Michael Schwartzkopff wrote:
> > > > Package: freeradius
> > > > Version: 2.1.8+dfsg-1
> > > > Severity: important
> > > >
> > > > Executing radtest <user> <pass> localhost 1 testing123
> > > >
> > > > gives the error:
> > > >
> > > > radclient: socket: cannot initialize udpfromto: Function not
> > > > implemented
> > > >
> > > > this seems to be a IPv6 related issue sind radcleint apparently uses
> > > > ::1 instead of 127.0.0.1
> > > >
> > > > For more details see:
> > > > https://bugs.launchpad.net/ubuntu/+source/freeradius/+bug/430732
> > >
> > > Hm, I saw a similar report on the freeradius-users list recently...
> > > When you do 'ping localhost', what comes up, the IPv6 address or the
> > > IPv4 one?
> >
> > ping ONLY uses IPv4 DNS, ping6 is the tool using IPv6. So no problems
> > pinging localhost.
> >
> > radclient first looks for the IPv6 address and only after that for IPv4.
>
> OK, let me rephrase. Does 'localhost' ever *resolve* into an IPv6 address?
> What does 'ping6 localhost' produce?
1) "Ever": Yes. See /etc/hosts:
127.0.0.1 localhost
::1 localhost ip6-localhost ip6-loopback
2) # ping localhost
PING localhost (127.0.0.1) 56(84) bytes of data.
64 bytes from localhost (127.0.0.1): icmp_seq=1 ttl=64 time=0.028 ms
tcpdump -n -i lo gives:
12:11:15.744618 IP 127.0.0.1 > 127.0.0.1: ICMP echo request, id 51743, seq 1,
length 64
12:11:15.744634 IP 127.0.0.1 > 127.0.0.1: ICMP echo reply, id 51743, seq 1,
length 64
3)
# ping6 -c1 localhost
PING localhost(localhost) 56 data bytes
64 bytes from localhost: icmp_seq=1 ttl=64 time=0.043 ms
and the tcpdump:
12:11:54.298640 IP6 ::1 > ::1: ICMP6, echo request, seq 1, length 64
12:11:54.298662 IP6 ::1 > ::1: ICMP6, echo reply, seq 1, length 64
4) 127.0.0.1 seems to work. See:
# radtest user password 127.0.0.1 1 testing123
Sending Access-Request of id 129 to 127.0.0.1 port 1812
User-Name = "user"
User-Password = "password"
NAS-IP-Address = 10.0.0.4
NAS-Port = 1
rad_recv: Access-Accept packet from host 127.0.0.1 port 1812, id=129,
length=20
5) ::1 throws the error:
# radtest misch misch ::1 1 testing123
radclient: socket: cannot initialize udpfromto: Function not implemented
6) localhost is resolved into ::1 (!)
# radtest misch misch localhost 1 testing123
radclient: socket: cannot initialize udpfromto: Function not implemented
7) If I comment ::1 out in the /etc/hosts everything works again:
# radtest misch misch localhost 1 testing123
Sending Access-Request of id 210 to 127.0.0.1 port 1812
User-Name = "misch"
User-Password = "misch"
NAS-IP-Address = 10.0.0.4
NAS-Port = 1
rad_recv: Access-Accept packet from host 127.0.0.1 port 1812, id=210,
length=20
I hope this clarifies the problem.
--
Dr. Michael Schwartzkopff
MultiNET Services GmbH
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