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Re: -current kernel + -7 userland + carp + ipf = failure
On Fri, 12 May 2017, Hauke Fath wrote:
On Fri, 12 May 2017 08:33:57 +0100 (BST), Stephen Borrill wrote:
xennet0: flags=8963<MULTICAST> mtu 1500
inet6 fe80::d441:19ff:fe58:ccd5%xennet0 prefixlen 64 scopeid 0x2
carp0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
carp: MASTER carpdev xennet0 vhid 1 advbase 1 advskew 0
inet 192.168.1.88 netmask 0xffffff00 broadcast 192.168.1.255
If I configure an IP address directly on xennet0 it works.
My understanding is that, behind a system of smoke and mirrors, carp
will add the primary address of a set of redundant machines in a subnet
as an alias to the active machine's interface. This appears to require
that the interface is configured. I have not checked whether you could
get away with rfc1918 addresses as primary addresses on the interfaces;
otherwise, it's (1 + # of machines) ip addresses per subnet.
You don't need to do any of the above. A single shared IP on carpX is
sufficient; no IP address is required on the base interface.
To confirm, my complaint here is that while the configuration works fine
in -7, with a -current kernel it does not.
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