[Pkg-samba-maint] Bug#574283: samba: Doesn't bind to IPv4

[Adam Aube]

Freshly installed Debian Squeeze a few days ago, and was also surprised that
Samba isn't listening on the IPv4 address according to netstat. However, it
doesn't appear to actually be breaking anything.

Minor changes to default smb.conf:

[global]
   security=share
[test]
   path = /srv/samba/test
   read only = no
   guest ok = yes
   force group = sambashare

Baseline netstat after restarting Samba:

$ netstat -ant
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address           Foreign Address         State
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN
tcp        0      0 127.0.0.1:25            0.0.0.0:*               LISTEN
tcp        0     52 10.0.0.50:22            10.0.0.101:49164
ESTABLISHED
tcp6       0      0 :::22                   :::*                    LISTEN
tcp6       0      0 ::1:25                  :::*                    LISTEN
tcp6       0      0 :::445                  :::*                    LISTEN
tcp6       0      0 :::139                  :::*                    LISTEN

Browse from a Windows 7 PC, create a test file, and open it in Notepad:

$ netstat -ant
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address           Foreign Address         State
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN
tcp        0      0 127.0.0.1:25            0.0.0.0:*               LISTEN
tcp        0      0 10.0.0.50:22            10.0.0.101:49164
ESTABLISHED
tcp6       0      0 :::22                   :::*                    LISTEN
tcp6       0      0 ::1:25                  :::*                    LISTEN
tcp6       0      0 :::445                  :::*                    LISTEN
tcp6       0      0 :::139                  :::*                    LISTEN
tcp6       0      0 10.0.0.50:139           10.0.0.101:49213
ESTABLISHED

Browse from a Windows XP PC (no IPv6 support) and open that same test file
in Notepad:

$ netstat -ant
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address           Foreign Address         State
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN
tcp        0      0 127.0.0.1:25            0.0.0.0:*               LISTEN
tcp        0     52 10.0.0.50:22            10.0.0.101:49164
ESTABLISHED
tcp6       0      0 :::22                   :::*                    LISTEN
tcp6       0      0 ::1:25                  :::*                    LISTEN
tcp6       0      0 :::445                  :::*                    LISTEN
tcp6       0      0 :::139                  :::*                    LISTEN
tcp6       0      0 10.0.0.50:139           10.0.0.102:1198
ESTABLISHED

In short, netstat is just deceiving us for some reason - Samba is, indeed,
listening and communicating using IPv4.
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