IPv6 address autoconfiguration vs static on SF302-08P

Question

I've just installed a 302-08P in my office so that we can get our VoIP trunks into our office, so my officemate and I can actually test
the phones before we hand them out. (Can't do that easily with the 1 RJ-45 facilities gave us...)
I noticed that I can not enable IPv6 address autoconfiguration for the management interface, as well as set a static IPv6 address.
This seems wrong: I want the device to always AC an address: it makes bonjour and renumbering much easier. But,
I want to give the device a static IP for purposes like management, DNS, etc.  If this unit failed, I'd replace it but it's address would not change.
IPv6 hosts (which the management interface is) should be completely happy with having multiple addresses on an interface, not just
having addresses from multiple prefixes.  What gives?

Answer 1

houmles wrote:I found that I can't have two gateways on one interface, but until now there's no problem.
I suspect it's a problem with that; I've noticed this problem as well.
When trying to add multiple default gateways with iproute2 (ie, `ip r a default via xxx:xxx:xxx::xxxx`) it errors with the error you've mentioned. I'm not sure if this is a kernel bug, iproute2 bug, or not a bug at all.
Having multiple default IPv4 gateways works fine.
I believe netcfg doesn't check for an existing gateway and delete it first (or use `ip r r` instead or `ip r a`) before adding the one; but I haven't checked the code so I could be wrong.
EDIT:
OK, I couldn't resist looking at the code, and it indeed does a 'dumb' addition of the gateway:
112 if [[ -n "$GATEWAY" ]]; then
113 report_debug ethernet_iproute_up ip route add default via "$GATEWAY" dev "$INTERFACE"
114 if ! ip route add default via "$GATEWAY" dev "$INTERFACE"; then
115 report_iproute "Adding gateway $GATEWAY failed"
116 fi
117 fi
I'm looking at making a patch now. Patch and bug report: https://bugs.archlinux.org/task/29480
Last edited by fukawi2 (2012-04-16 01:00:09)