02-24-2014
OK, very short introduction to networking basics:
"IP" is the basis for all internet communication (hence the name, "Internet Protocol"). For some aspects of this protocol it is necessary that a host can communicate with itself, just like it would be another host (like you look at yourself in the mirror). For this there is a special address, which does not belong to a certain host at all, but to each host: 127.0.0.1. This is called the "loopback" address every host can use this to connect internally to itself.
So far, so good. Alas, the classical IP (which, in fact, is "IP v4") is getting to its limits in many ways. One of the aspects where IP (v4) is starting to experience problems is the address room: the classical 4-byte address is simply not providing enough numbering space to accomodate for all the devices needing to access the internet (which needs a unique IP address as a prerequisite). Therefore IP v6 (or "IPng - next generation"; don't ask what happened to v5) provides a much bigger address space. In this new address space "::1" is the new loopback address.
I suppose you need to either deactivate IP v6 somewhere and/or activate "IP v4 only" to get rid of the "::1", because most probably PHP, as a network-aware language, automatically translates "127.0.0.1" to "::1" back and forth.
I know this won't help you in finding the problem directly, but at least you should now know what to look for and why.
I hope this helps.
bakunin
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
I am totally newbie. I try to login UNIX Solaris 10 through ssh command as user then i use sudo command to login as root: sudo su - but system give me an error sudo: not found. How can i fix this problem and install ssh services for my unix. (1 Reply)
Discussion started by: cthinh
1 Replies
2. UNIX for Dummies Questions & Answers
Hi! I'm very new to unix, so please keep that in mind with the level of language used if you choose to help :D Thanks!
When attempting to use sudo on and AIX machine with oslevel 5.1.0.0, I get the following error:
exec(): 0509-036 Cannot load program sudo because of the following errors:... (1 Reply)
Discussion started by: Chloe123
1 Replies
3. UNIX for Dummies Questions & Answers
As I am trying to log in, when input my user-name (root), when the password prompt, this is what I got (highlighted in red), before i can put in my password. Please tell my why this happened.
console login: root
Password:
sh: sudo: not found
Thank you. (0 Replies)
Discussion started by: iamnew2solaris
0 Replies
4. Solaris
Hi,
I followed the step written in README.
It got some error message when I type " #python setup.py build"
running build
running build_py
copying MySQLdb/release.py -> build/lib.solaris-2.11-i86pc-2.4/MySQLdb
running build_ext
building '_mysql' extension
/usr/lib/python2.4/pycc -DNDEBUG... (2 Replies)
Discussion started by: AlexCheung
2 Replies
5. BSD
Hey all I'm having a little trouble installing a MySQL database. This is what I tried...
export PKG_PATH=ftp://mirror.planetunix.net/pub/OpenBSD/4.9/packages/`machine -a`
pkg_add -v mysql-server mysql-client
and this is what I get
Unknown element: @rcscript /etc/rc.d/mysqld in... (1 Reply)
Discussion started by: desreguard
1 Replies
6. BSD
Hello, all. My english is not good.
I have a problem installing FreeBsd.
I have not CD-Roms, so i use program FlashBoot for convert iso-image to USB Device.
After, I was beginning to install FreeBsd (Sorry my english)
When it's time to choose an installation media, i select 9 USB:... (3 Replies)
Discussion started by: snet
3 Replies
7. Shell Programming and Scripting
I am writing a BASH script to update a webserver and then restart Apache. It looks basically like this:
#!/bin/bash
rsync /path/on/local/machine/ foo.com:path/on/remote/machine/
ssh foo.com sudo /etc/init.d/apache2 reloadrsync and ssh don't prompt for a password, because I have DSA encryption... (9 Replies)
Discussion started by: fluoborate
9 Replies
8. UNIX for Dummies Questions & Answers
We are deploying an app to our students that is running as a daemon. It keeps them from using certain software. The problem is that when we initially deploy it we don't want to require a restart. So we decided to use launchctl to load the daemon manually. When we do it this way, though, the... (4 Replies)
Discussion started by: nextyoyoma
4 Replies
9. Red Hat
Hi i am trying to install mysql rpm package on my linux machine but getting below error :
warning: MySQL-embedded-5.5.28-1.rhel5.i386.rpm: V3 DSA signature: NOKEY, key ID 5072e1f5
error: Failed dependencies:
MySQL-devel is needed by MySQL-embedded-5.5.28-1.rhel5.i386
... (9 Replies)
Discussion started by: mukulverma2408
9 Replies
10. Shell Programming and Scripting
My yum install command is failing. I first did yum clean all
I even tried with localinstall.
Below is the error output:
yum install mysql-community-server*.rpm
Loaded plugins: langpacks, product-id, search-disabled-repos, subscription-manager
This system is not registered with an... (8 Replies)
Discussion started by: mohtashims
8 Replies
LEARN ABOUT HPUX
xremovehosa
XRemoveHost() XRemoveHost()
Name
XRemoveHost - remove a host from the access control list.
Synopsis
XRemoveHost(display, host)
Display *display;
XHostAddress *host;
Arguments
display Specifies a connection to an X server; returned from XOpenDisplay().
host Specifies the network address of the machine to be removed.
Description
XRemoveHost() removes the specified host from the access control list of the connected server. The server must be on the same host as the
process that calls XRemoveHost() in order to change the access control list.
If you remove your own machine from the access control list, you can no longer connect to that server, and there is no way back from this
call other than to log out, edit the access control file, and reset the server. The address data must be a valid address for the type of
network in which the server operates, as specified in the family member.
For TCP/IP, the address should be in network byte order. For the DECnet family, the server performs no automatic swapping on the address
bytes. A Phase IV address is two bytes long. The first byte contains the least significant eight bits of the node number. The second
byte contains the most significant two bits of the node number in the least significant two bits of the byte, and the area in the most sig-
nificant six bits of the byte.
For more information on access control lists, see Volume One, Chapter 15, Other Programming Techniques.
Structures
typedef struct {
int family; /* for example Family Internet */
int length; /* length of address, in bytes */
char *address; /* pointer to where to find the bytes */
} XHostAddress;
/* constants used for family member of XHostAddress */
#define FamilyInternet 0
#define FamilyDECnet 1
#define FamilyChaos 2
Errors
BadAccess
BadValue
See Also
XAddHost(), XAddHosts(), XDisableAccessControl(), XEnableAccessControl(), XListHosts(), XRemoveHosts(), XSetAccessControl().
Xlib - Host Access XRemoveHost()