Date: Thu, 19 Jun 2008 00:08:58 +0200 From: Giulio Ferro <auryn@zirakzigil.org> To: freebsd-net@freebsd.org Subject: Problems with vlan + carp + alias Message-ID: <4859877A.3020300@zirakzigil.org>
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Scenario : freebsd 7.0 stable amd64 (compiled today), bce network interface Simply put, I'm trying to create multiple aliases on the same carp interface. I did this without vlans (on physical interfaces) and it always worked. Here's what I do: ---rc.conf ... ifconfig_bce0="inet 192.168.1.1 netmask 255.255.255.0" ifconfig_vlan10="inet 192.168.10.1 netmask 255.255.255.0 vlan 10 vlandev bce0" ifconfig_carp10="vhid 10 pass qweq 192.168.10.10 netmask 255.255.255.0" ifconfig_carp10_alias0="192.168.10.11 netmask 255.255.255.0" ifconfig_carp10_alias1="192.168.10.12 netmask 255.255.255.0" ifconfig_carp10_alias2="192.168.10.13 netmask 255.255.255.0" ifconfig_carp10_alias3="192.168.10.14 netmask 255.255.255.0" ifconfig_carp10_alias4="192.168.10.15 netmask 255.255.255.0" ifconfig_carp10_alias5="192.168.10.16 netmask 255.255.255.0" ifconfig_carp10_alias6="192.168.10.17 netmask 255.255.255.0" ifconfig_carp10_alias7="192.168.10.18 netmask 255.255.255.0" ifconfig_carp10_alias8="192.168.10.19 netmask 255.255.255.0" ifconfig_carp10_alias9="192.168.10.20 netmask 255.255.255.0" ... --- First of all, whenever I try to reload a carp configuration by /etc/rc.d/netif restart the system goes kernel panic. I always have to restart the server to load the new configuration. This is not the core of the problem, however. If I issue a ifconfig carp10 I can see all the aliases and the interface is in MASTER state. When I try to ping these addresses from another machine in the same vlan (10), I can only ping the vlan base address (192.168.10.10) and the first aliased address (192.168.10.11). All other aliases don't respond to external pings. If I try to inspect incoming packets with tcpdump : tcpdump -i vlan10 -n icmp I can see the packets coming in, but the other aliased addresses seem inactive. What is interesting is that an arp request actually takes places and is answered (all aliased ifs have the same mac address), but nobody respond to the ping but the first alias and the vlan base address. Does someone have any ideas?
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