[Bug 1693819] Re: dhclient DHCPv6 does not work with interface alias
** Changed in: isc-dhcp (Ubuntu) Assignee: Dan Streetman (ddstreet) => (unassigned) ** Changed in: isc-dhcp (Ubuntu Zesty) Assignee: Dan Streetman (ddstreet) => (unassigned) ** Changed in: isc-dhcp (Ubuntu Artful) Status: In Progress => Confirmed ** Changed in: isc-dhcp (Ubuntu Artful) Assignee: Dan Streetman (ddstreet) => (unassigned) ** Changed in: isc-dhcp (Ubuntu Yakkety) Assignee: Dan Streetman (ddstreet) => (unassigned) ** Changed in: isc-dhcp (Ubuntu Xenial) Assignee: Dan Streetman (ddstreet) => (unassigned) ** Changed in: isc-dhcp (Ubuntu Trusty) Assignee: Dan Streetman (ddstreet) => (unassigned) ** Changed in: isc-dhcp (Ubuntu) Status: In Progress => Confirmed ** Changed in: isc-dhcp (Ubuntu) Status: Confirmed => Won't Fix ** Changed in: isc-dhcp (Ubuntu Trusty) Status: Confirmed => Won't Fix ** Changed in: isc-dhcp (Ubuntu Xenial) Status: Confirmed => Won't Fix ** Changed in: isc-dhcp (Ubuntu Yakkety) Status: Confirmed => Won't Fix ** Changed in: isc-dhcp (Ubuntu Zesty) Status: Confirmed => Won't Fix ** Changed in: isc-dhcp (Ubuntu Artful) Status: Confirmed => Won't Fix -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1693819 Title: dhclient DHCPv6 does not work with interface alias To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1693819/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1693819] Re: dhclient DHCPv6 does not work with interface alias
** Tags removed: patch ** Tags added: patch-needswork -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1693819 Title: dhclient DHCPv6 does not work with interface alias To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1693819/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1693819] Re: dhclient DHCPv6 does not work with interface alias
I should note: 1. The isc-dhcp code is common between dhcpd and dhclient 2. The current system interfaces are enumerated in common/discover.c, and that code - in next_iface() - strips the interface alias from all enumerated interfaces, so when dhcpd or dhclient is comparing a parameter against an existing interface, none of the existing enumerated interface names will have aliases 3. The interface parameters are parsed separately for dhcpd and dhclient; my patch changes *only* the parsing for dhclient, in client/dhclient.c, so that any command line interface names have their alias stripped 4. Other places that parse interface name parameters are dhcpd (in server/dhcpd.c), interface hotplug (maybe? in server/mdb.c, not sure about this file), and the dhcp relay (in relay/dhcrelay.c); my patch does *not* change any of these places, so interface name parameters to dhcpd, the dhcp relay, or in mdb.c, will still have interface aliases, and will not match any of the internally-enumerated (in common/discover.c) interface names. However, my patch narrowly fixes this specific bug, of 'dhclient -6 eth0:1' not working. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1693819 Title: dhclient DHCPv6 does not work with interface alias To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1693819/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1693819] Re: dhclient DHCPv6 does not work with interface alias
** Tags added: rls-aa-notfixing -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1693819 Title: dhclient DHCPv6 does not work with interface alias To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1693819/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1693819] Re: dhclient DHCPv6 does not work with interface alias
PPA updated with the current patches. https://launchpad.net/~ddstreet/+archive/ubuntu/lp1693819 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1693819 Title: dhclient DHCPv6 does not work with interface alias To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1693819/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1693819] Re: dhclient DHCPv6 does not work with interface alias
** Patch added: "lp1693819v2-artful.debdiff" https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1693819/+attachment/4891685/+files/lp1693819v2-artful.debdiff -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1693819 Title: dhclient DHCPv6 does not work with interface alias To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1693819/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1693819] Re: dhclient DHCPv6 does not work with interface alias
** Patch added: "lp1693819v2-zesty.debdiff" https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1693819/+attachment/4891684/+files/lp1693819v2-zesty.debdiff -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1693819 Title: dhclient DHCPv6 does not work with interface alias To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1693819/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1693819] Re: dhclient DHCPv6 does not work with interface alias
** Patch added: "lp1693819v2-yakkety.debdiff" https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1693819/+attachment/4891683/+files/lp1693819v2-yakkety.debdiff -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1693819 Title: dhclient DHCPv6 does not work with interface alias To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1693819/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1693819] Re: dhclient DHCPv6 does not work with interface alias
** Patch removed: "lp1693819-trusty.debdiff" https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1693819/+attachment/4884172/+files/lp1693819-trusty.debdiff ** Patch removed: "lp1693819-xenial.debdiff" https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1693819/+attachment/4884173/+files/lp1693819-xenial.debdiff ** Patch removed: "lp1693819-yakkety.debdiff" https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1693819/+attachment/4884174/+files/lp1693819-yakkety.debdiff ** Patch removed: "lp1693819-zesty.debdiff" https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1693819/+attachment/4884175/+files/lp1693819-zesty.debdiff ** Patch removed: "lp1693819-artful.debdiff" https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1693819/+attachment/4884176/+files/lp1693819-artful.debdiff ** Patch added: "lp1693819v2-trusty.debdiff" https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1693819/+attachment/4891681/+files/lp1693819v2-trusty.debdiff -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1693819 Title: dhclient DHCPv6 does not work with interface alias To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1693819/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1693819] Re: dhclient DHCPv6 does not work with interface alias
Attached patches that rework the patch, instead of changing common/discover.c to strip the interface alias during name comparison, the new patch strips the interface alias in client/dhclient.c before copying the argv parameter, so dhclient does not use the alias at all. I tested in t/x/y/z/a and dhclient still worked with normal (non- aliased) interface names, as well as working for dhcpv4 and dhcpv6 for aliased interface names, both requesting and releasing. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1693819 Title: dhclient DHCPv6 does not work with interface alias To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1693819/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1693819] Re: dhclient DHCPv6 does not work with interface alias
** Patch added: "lp1693819v2-xenial.debdiff" https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1693819/+attachment/4891682/+files/lp1693819v2-xenial.debdiff -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1693819 Title: dhclient DHCPv6 does not work with interface alias To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1693819/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1693819] Re: dhclient DHCPv6 does not work with interface alias
The attached debdiffs introduce a regression, please hold off applying until I can investigate and update the patches. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1693819 Title: dhclient DHCPv6 does not work with interface alias To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1693819/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1693819] Re: dhclient DHCPv6 does not work with interface alias
** Changed in: isc-dhcp (Ubuntu Artful) Status: New => In Progress ** Changed in: isc-dhcp (Ubuntu Zesty) Status: New => Confirmed ** Changed in: isc-dhcp (Ubuntu Yakkety) Status: New => Confirmed ** Changed in: isc-dhcp (Ubuntu Xenial) Status: New => Confirmed ** Changed in: isc-dhcp (Ubuntu Trusty) Status: New => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1693819 Title: dhclient DHCPv6 does not work with interface alias To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1693819/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1693819] Re: dhclient DHCPv6 does not work with interface alias
** Changed in: isc-dhcp (Debian) Status: Unknown => New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1693819 Title: dhclient DHCPv6 does not work with interface alias To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1693819/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1693819] Re: dhclient DHCPv6 does not work with interface alias
The attachment "lp1693819-trusty.debdiff" seems to be a debdiff. The ubuntu-sponsors team has been subscribed to the bug report so that they can review and hopefully sponsor the debdiff. If the attachment isn't a patch, please remove the "patch" flag from the attachment, remove the "patch" tag, and if you are member of the ~ubuntu-sponsors, unsubscribe the team. [This is an automated message performed by a Launchpad user owned by ~brian-murray, for any issue please contact him.] ** Tags added: patch -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1693819 Title: dhclient DHCPv6 does not work with interface alias To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1693819/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1693819] Re: dhclient DHCPv6 does not work with interface alias
This has been assigned upstream ISC bug: ISC-Bugs #45294 ISC's bug tracking is not public, so there is no way to track any upstream progress in fixing this. ** Bug watch added: Debian Bug tracker #863426 http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=863426 ** Also affects: isc-dhcp (Debian) via http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=863426 Importance: Unknown Status: Unknown -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1693819 Title: dhclient DHCPv6 does not work with interface alias To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1693819/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1693819] Re: dhclient DHCPv6 does not work with interface alias
Test packages available in this PPA https://launchpad.net/~ddstreet/+archive/ubuntu/lp1693819 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1693819 Title: dhclient DHCPv6 does not work with interface alias To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1693819/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1693819] Re: dhclient DHCPv6 does not work with interface alias
This is specifically important for any configuration that wants to have both a IPv4 address and DHCPv6 IPv6 address on a single interface, and uses ifupdown for interface management, and wants independent control of the 4 and 6 address. Meaning, to be able to add or remove an interface's IPv6 DHCPv6 address, while leaving the interface up and still configured with its IPv4 address. The ifupdown program does not have any mechanism for controlling IPv4 and IPv6 addresses on a single interface separately, so interface aliases are the most convenient way to keep using ifupdown and be able to control the addresses separately. An example ifupdown configuration might be: auto eth0 iface eth0 inet manual pre-down ifdown eth0:1 pre-down ifdown eth0:2 auto eth0:1 iface eth0:1 inet dhcp auto eth0:2 iface eth0:2 inet6 dhcp That configuration will start dhcp for both IPv4 and IPv6 addresses on eth0 at boot, and will allow running 'sudo ifdown eth0:1' to remove the IPv4 address only, while leaving the IPv6 address, or 'sudo ifdown eth0:2' to remove the IPv6 address only, while leaving the IPv4 address. Or, 'sudo ifdown eth0' will remove both addresses and take down the physical interface. Since this configuration uses an interface alias for DHCPv6, the current isc-dhcp-client fails, and requires the patch from the attached debdiffs to work. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1693819 Title: dhclient DHCPv6 does not work with interface alias To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1693819/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1693819] Re: dhclient DHCPv6 does not work with interface alias
** Changed in: isc-dhcp (Ubuntu Zesty) Assignee: (unassigned) => Dan Streetman (ddstreet) ** Changed in: isc-dhcp (Ubuntu Yakkety) Assignee: (unassigned) => Dan Streetman (ddstreet) ** Changed in: isc-dhcp (Ubuntu Xenial) Assignee: (unassigned) => Dan Streetman (ddstreet) ** Changed in: isc-dhcp (Ubuntu Trusty) Assignee: (unassigned) => Dan Streetman (ddstreet) ** Changed in: isc-dhcp (Ubuntu Zesty) Importance: Undecided => Low ** Changed in: isc-dhcp (Ubuntu Yakkety) Importance: Undecided => Low ** Changed in: isc-dhcp (Ubuntu Xenial) Importance: Undecided => Low ** Changed in: isc-dhcp (Ubuntu Trusty) Importance: Undecided => Low -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1693819 Title: dhclient DHCPv6 does not work with interface alias To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1693819/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1693819] Re: dhclient DHCPv6 does not work with interface alias
** Patch added: "lp1693819-artful.debdiff" https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1693819/+attachment/4884176/+files/lp1693819-artful.debdiff ** Changed in: isc-dhcp (Ubuntu) Assignee: (unassigned) => Dan Streetman (ddstreet) ** Changed in: isc-dhcp (Ubuntu) Importance: Undecided => Low -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1693819 Title: dhclient DHCPv6 does not work with interface alias To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1693819/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1693819] Re: dhclient DHCPv6 does not work with interface alias
** Also affects: isc-dhcp (Ubuntu Artful) Importance: Low Assignee: Dan Streetman (ddstreet) Status: New ** Also affects: isc-dhcp (Ubuntu Trusty) Importance: Undecided Status: New ** Also affects: isc-dhcp (Ubuntu Xenial) Importance: Undecided Status: New ** Also affects: isc-dhcp (Ubuntu Yakkety) Importance: Undecided Status: New ** Also affects: isc-dhcp (Ubuntu Zesty) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1693819 Title: dhclient DHCPv6 does not work with interface alias To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1693819/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1693819] Re: dhclient DHCPv6 does not work with interface alias
** Patch added: "lp1693819-yakkety.debdiff" https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1693819/+attachment/4884174/+files/lp1693819-yakkety.debdiff -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1693819 Title: dhclient DHCPv6 does not work with interface alias To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1693819/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1693819] Re: dhclient DHCPv6 does not work with interface alias
** Patch added: "lp1693819-trusty.debdiff" https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1693819/+attachment/4884172/+files/lp1693819-trusty.debdiff -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1693819 Title: dhclient DHCPv6 does not work with interface alias To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1693819/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1693819] Re: dhclient DHCPv6 does not work with interface alias
** Patch added: "lp1693819-zesty.debdiff" https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1693819/+attachment/4884175/+files/lp1693819-zesty.debdiff -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1693819 Title: dhclient DHCPv6 does not work with interface alias To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1693819/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1693819] Re: dhclient DHCPv6 does not work with interface alias
** Patch added: "lp1693819-xenial.debdiff" https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1693819/+attachment/4884173/+files/lp1693819-xenial.debdiff -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1693819 Title: dhclient DHCPv6 does not work with interface alias To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1693819/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1693819] Re: dhclient DHCPv6 does not work with interface alias
This problem is because isc-dhcp strips the interface alias when it
enumerates the system interfaces, i.e. in common/discover.c function
next_iface():
/* interface aliases look like "eth0:1" or "wlan1:3" */
s = strchr(info->name, ':');
if (s != NULL) {
*s = '\0';
}
However when later searching the previously-enumerated list for the
matching interface for the cmdline interface parameter name, it does not
strip the interface alias from the cmdline interface name, i.e. in
common/discover.c function discover_interfaces():
/* Cycle through the list of interfaces looking for IP addresses. */
while (next_iface(, , )) {
/* See if we've seen an interface that matches this one. */
for (tmp = interfaces; tmp; tmp = tmp->next) {
if (!strcmp(tmp->name, info.name))
break;
}
The 'info' interface will always have its info.name set to the actual interface
name, without any alias extension, while the 'tmp' interface (from the cmdline)
will have its tmp->name set to the interface including alias extension; the
strcmp then never matches, so isc-dhcp is not able to correctly match the
requested interface with the actual system interface.
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https://bugs.launchpad.net/bugs/1693819
Title:
dhclient DHCPv6 does not work with interface alias
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