Re: IP_ALIAS in 2.4.x gone?
Hi, > "Alan Olsen" == Alan Olsen <[EMAIL PROTECTED]> writes: Alan Olsen> I found the problem... Alan Olsen> IP_ALIAS is no longer needed in the config. [...] Alan Olsen> The documentation does not reflect that the alias Alan Olsen> behaviour is on by default. yes and sorry, you are absolutely right. Alan Olsen> I will submit a patch for the docs that reflects this so Alan Olsen> others will not get confused by that. great, this will surely help. i've appended a first try how the changes could be clarified. please take this as a hopefully helpful proposal (HHP for short ;-). Erik --- linux-2.4.5/Documentation/networking/alias.txt-245 Tue Apr 28 23:22:04 1998 +++ linux-2.4.5/Documentation/networking/alias.txt Thu Jun 21 01:41:45 2001 @@ -2,40 +2,43 @@ IP-Aliasing: +IP-aliases are additional IP-adresses/masks hooked up to a base +interface by adding a colon and a string when running ifconfig. +This string is usually numeric, but this is not a must. + +IP-Aliases are avail if CONFIG_INET (`standard' IPv4 networking) +is configured in the kernel. -o For IP aliasing you must have IP_ALIAS support included by static - linking. o Alias creation. - Alias creation is done by 'magic' iface naming: eg. to create a + Alias creation is done by 'magic' interface naming: eg. to create a 200.1.1.1 alias for eth0 ... # ifconfig eth0:0 200.1.1.1 etc,etc ~~ -> request alias #0 creation (if not yet exists) for eth0 -and routing stuff also ... -# route add -host 200.1.1.1 dev eth0:0 (if same IP network as - main device) - -# route add -net 200.1.1.0 dev eth0:0 (if completely new network wanted - for eth0:0) + +The corresponding route is also set up by this command. +Please note: The route always points to the base interface. + o Alias deletion. - Also done by shutting the interface down: + The alias is removed by shutting the alias down: # ifconfig eth0:0 down ~~ -> will delete alias -Alias (re-)configuring +o Alias (re-)configuring - Aliases are not real devices, but programs` should be able to configure and + Aliases are not real devices, but programs should be able to configure and refer to them as usual (ifconfig, route, etc). -Relationship with main device -- - - the main device is an alias itself like additional aliases and can -be shut down without deleting other aliases. +o Relationship with main device + + If the base device is shut down the added aliases will be deleted + too. + Contact --- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: IP_ALIAS in 2.4.x gone?
I found the problem... IP_ALIAS is no longer needed in the config. I screwed up the init script configs for it so it did not work as expected. The documentation does not reflect that the alias behaviour is on by default. I will submit a patch for the docs that reflects this so others will not get confused by that. On Wed, 20 Jun 2001, Alan Olsen wrote: > > Has the IP_ALIAS functionality been replaced by something else in the > 2.4.x kernels? > > Documentation/networking/alias.txt seems to imply that it still does, but > the string IP_ALIAS does not exist anywhere else in the entire source > tree. (Unless you count the default configs for non-i86 architectures. > > There is a "virtual server" option in the kernel that ships with Redhat, > but I assume that this is a patch for something Redhat specific. (It is > not an option in 2.4.5, unless I am missing something.) > > How is binding multiple IPs to a single ethernet card *supposed* to be > handled under 2.4.x? If the IP_ALIAS option is no longer valid, then the > alias.txt doc should be changed to reflect the new option. > > Thanks! > > [EMAIL PROTECTED] | Note to AOL users: for a quick shortcut to reply > Alan Olsen| to my mail, just hit the ctrl, alt and del keys. > "All power is derived from the barrel of a gnu." - Mao Tse Stallman > > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to [EMAIL PROTECTED] > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ > [EMAIL PROTECTED] | Note to AOL users: for a quick shortcut to reply Alan Olsen| to my mail, just hit the ctrl, alt and del keys. "All power is derived from the barrel of a gnu." - Mao Tse Stallman - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
IP_ALIAS in 2.4.x gone?
Has the IP_ALIAS functionality been replaced by something else in the 2.4.x kernels? Documentation/networking/alias.txt seems to imply that it still does, but the string IP_ALIAS does not exist anywhere else in the entire source tree. (Unless you count the default configs for non-i86 architectures. There is a "virtual server" option in the kernel that ships with Redhat, but I assume that this is a patch for something Redhat specific. (It is not an option in 2.4.5, unless I am missing something.) How is binding multiple IPs to a single ethernet card *supposed* to be handled under 2.4.x? If the IP_ALIAS option is no longer valid, then the alias.txt doc should be changed to reflect the new option. Thanks! [EMAIL PROTECTED] | Note to AOL users: for a quick shortcut to reply Alan Olsen| to my mail, just hit the ctrl, alt and del keys. "All power is derived from the barrel of a gnu." - Mao Tse Stallman - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
IP_ALIAS in 2.4.x gone?
Has the IP_ALIAS functionality been replaced by something else in the 2.4.x kernels? Documentation/networking/alias.txt seems to imply that it still does, but the string IP_ALIAS does not exist anywhere else in the entire source tree. (Unless you count the default configs for non-i86 architectures. There is a virtual server option in the kernel that ships with Redhat, but I assume that this is a patch for something Redhat specific. (It is not an option in 2.4.5, unless I am missing something.) How is binding multiple IPs to a single ethernet card *supposed* to be handled under 2.4.x? If the IP_ALIAS option is no longer valid, then the alias.txt doc should be changed to reflect the new option. Thanks! [EMAIL PROTECTED] | Note to AOL users: for a quick shortcut to reply Alan Olsen| to my mail, just hit the ctrl, alt and del keys. All power is derived from the barrel of a gnu. - Mao Tse Stallman - To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: IP_ALIAS in 2.4.x gone?
I found the problem... IP_ALIAS is no longer needed in the config. I screwed up the init script configs for it so it did not work as expected. The documentation does not reflect that the alias behaviour is on by default. I will submit a patch for the docs that reflects this so others will not get confused by that. On Wed, 20 Jun 2001, Alan Olsen wrote: Has the IP_ALIAS functionality been replaced by something else in the 2.4.x kernels? Documentation/networking/alias.txt seems to imply that it still does, but the string IP_ALIAS does not exist anywhere else in the entire source tree. (Unless you count the default configs for non-i86 architectures. There is a virtual server option in the kernel that ships with Redhat, but I assume that this is a patch for something Redhat specific. (It is not an option in 2.4.5, unless I am missing something.) How is binding multiple IPs to a single ethernet card *supposed* to be handled under 2.4.x? If the IP_ALIAS option is no longer valid, then the alias.txt doc should be changed to reflect the new option. Thanks! [EMAIL PROTECTED] | Note to AOL users: for a quick shortcut to reply Alan Olsen| to my mail, just hit the ctrl, alt and del keys. All power is derived from the barrel of a gnu. - Mao Tse Stallman - To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ [EMAIL PROTECTED] | Note to AOL users: for a quick shortcut to reply Alan Olsen| to my mail, just hit the ctrl, alt and del keys. All power is derived from the barrel of a gnu. - Mao Tse Stallman - To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: IP_ALIAS in 2.4.x gone?
Hi, Alan Olsen == Alan Olsen [EMAIL PROTECTED] writes: Alan Olsen I found the problem... Alan Olsen IP_ALIAS is no longer needed in the config. [...] Alan Olsen The documentation does not reflect that the alias Alan Olsen behaviour is on by default. yes and sorry, you are absolutely right. Alan Olsen I will submit a patch for the docs that reflects this so Alan Olsen others will not get confused by that. great, this will surely help. i've appended a first try how the changes could be clarified. please take this as a hopefully helpful proposal (HHP for short ;-). Erik --- linux-2.4.5/Documentation/networking/alias.txt-245 Tue Apr 28 23:22:04 1998 +++ linux-2.4.5/Documentation/networking/alias.txt Thu Jun 21 01:41:45 2001 @@ -2,40 +2,43 @@ IP-Aliasing: +IP-aliases are additional IP-adresses/masks hooked up to a base +interface by adding a colon and a string when running ifconfig. +This string is usually numeric, but this is not a must. + +IP-Aliases are avail if CONFIG_INET (`standard' IPv4 networking) +is configured in the kernel. -o For IP aliasing you must have IP_ALIAS support included by static - linking. o Alias creation. - Alias creation is done by 'magic' iface naming: eg. to create a + Alias creation is done by 'magic' interface naming: eg. to create a 200.1.1.1 alias for eth0 ... # ifconfig eth0:0 200.1.1.1 etc,etc ~~ - request alias #0 creation (if not yet exists) for eth0 -and routing stuff also ... -# route add -host 200.1.1.1 dev eth0:0 (if same IP network as - main device) - -# route add -net 200.1.1.0 dev eth0:0 (if completely new network wanted - for eth0:0) + +The corresponding route is also set up by this command. +Please note: The route always points to the base interface. + o Alias deletion. - Also done by shutting the interface down: + The alias is removed by shutting the alias down: # ifconfig eth0:0 down ~~ - will delete alias -Alias (re-)configuring +o Alias (re-)configuring - Aliases are not real devices, but programs` should be able to configure and + Aliases are not real devices, but programs should be able to configure and refer to them as usual (ifconfig, route, etc). -Relationship with main device -- - - the main device is an alias itself like additional aliases and can -be shut down without deleting other aliases. +o Relationship with main device + + If the base device is shut down the added aliases will be deleted + too. + Contact --- - To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
