On 2013/06/12 12:51, Martin Pieuchot wrote: > On 10/06/13(Mon) 02:05, Alexander Bluhm wrote: > > On Sun, Jun 09, 2013 at 06:34:27PM +0200, Christopher Zimmermann wrote: > > > inet 172.26.153.50 0xffffff00 NONE mtu 1398 > > > > > > in6_unlink_ifa: interface address 0xffff800000624a00 has no prefix > > > in6_unlink_ifa: interface address 0xffff800000624a00 has no prefix > > > > The error message is triggered by ifconfig lo1 create up. With > > address instead of pointer logging and sysctl net.inet6.icmp6.nd6_debug=1 > > you see the source of the problem. > > > > in6_unlink_ifa: interface address ::0001 has no prefix > > in6_ifattach_loopback: failed to configure the loopback address on lo1 > > (errno=17) > > > > It is a different issue that creating lo1 tries to add a ::1 address. > > But when this fails, it is correct that it has no prefix. So don't > > log an error here.
Diff is OK sthen. > I'm not sure to understand here, you're saying that is it correct that > lo1 has no prefix because it is a loopback interface or because, in > this case adding an IPv6 address failed? > > Martin > Both.. 1. it is correct that it has no prefix because it's a loopback address, and 2. in6_unlink_ifa is called on the loopback address, which then complains about the adress. but also: 3. the reason for in6_unlink_ifa being called at all is because in6_ifattach_loopback automatically tries to add in6addr_loopback to a newly created lo interface, which is the wrong thing to do in the case of multiple lo(4) interfaces. In the v4 case, 127.0.0.1 is set on the interface explicitly by /etc/netstart; v6 should probably do the same.
